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1) I've been using Ubuntu 18.04 with Windows 10 dual boot for some months now. Today suddenly my sound stopped working on Ubunutu. Activities -> Sound menu shows only "Dummy Output". All fine on Windows though.
2) Output of lsmod is:
rohit#rohitUb18043LTS:~$ lsmod | grep snd_
snd_seq_midi 20480 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_seq 69632 2 snd_seq_midi,snd_seq_midi_event
snd_rawmidi 36864 1 snd_seq_midi
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
snd_soc_dmic 16384 0
snd_hda_codec_realtek 118784 0
snd_hda_codec_generic 81920 1 snd_hda_codec_realtek
ledtrig_audio 16384 2 snd_hda_codec_generic,snd_hda_codec_realtek
snd_soc_hdac_hdmi 32768 0
snd_sof_intel_hda_common 73728 1 sof_pci_dev
snd_soc_hdac_hda 24576 1 snd_sof_intel_hda_common
snd_sof_intel_hda 20480 1 snd_sof_intel_hda_common
snd_sof_intel_byt 24576 1 sof_pci_dev
snd_sof_intel_ipc 20480 1 snd_sof_intel_byt
snd_sof 98304 4 snd_sof_intel_hda_common,snd_sof_intel_byt,snd_sof_intel_ipc,sof_pci_dev
snd_sof_xtensa_dsp 16384 1 sof_pci_dev
snd_hda_ext_core 28672 4 snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_sof_intel_hda
snd_soc_acpi_intel_match 32768 2 snd_sof_intel_hda_common,sof_pci_dev
snd_soc_acpi 16384 2 snd_soc_acpi_intel_match,sof_pci_dev
snd_soc_core 237568 5 snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_soc_dmic
snd_compress 24576 1 snd_soc_core
ac97_bus 16384 1 snd_soc_core
snd_pcm_dmaengine 16384 1 snd_soc_core
snd_hda_codec_hdmi 57344 1
snd_hda_intel 53248 2
snd_intel_nhlt 20480 1 snd_hda_intel
snd_hda_codec 131072 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda
snd_hda_core 90112 10 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 102400 10 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_core,snd_hda_core,snd_pcm_dmaengine
snd_timer 36864 2 snd_seq,snd_pcm
snd 86016 17 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
rohit#rohitUb18043LTS:~$
3) I installed all updates from Software updater but no luck.
4) No change by using: sudo alsa force-reload
5) Looking around, found this thread: https://askubuntu.com/questions/1059619/sound-card-shown-as-dummy-output-in-ubuntu-18-04 . User says found the "active profile was off" and links to a solution on this forum (https://forums.linuxmint.com/viewtopic.php?t=268499). I am pasting the output of the four commands as per that link:
rohit#rohitUb18043LTS:~$ sudo fuser -v /dev/snd/*
[sudo] password for rohit:
USER PID ACCESS COMMAND
/dev/snd/controlC0: gdm 1505 F.... pulseaudio
rohit 1878 F.... pulseaudio
rohit#rohitUb18043LTS:~$ pacmd list-cards
1 card(s) available.
index: 0
name: <alsa_card.pci-0000_01_00.1>
driver: <module-alsa-card.c>
owner module: 7
properties:
alsa.card = "0"
alsa.card_name = "HDA NVidia"
alsa.long_card_name = "HDA NVidia at 0xb4000000 irq 17"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:01:00.1"
sysfs.path = "/devices/pci0000:00/0000:00:01.0/0000:01:00.1/sound/card0"
device.bus = "pci"
device.vendor.id = "10de"
device.vendor.name = "NVIDIA Corporation"
device.product.id = "0fb9"
device.product.name = "GP107GL High Definition Audio Controller"
device.string = "0"
device.description = "GP107GL High Definition Audio Controller"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
profiles:
output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5400, available: no)
output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 300, available: no)
output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 300, available: no)
off: Off (priority 0, available: unknown)
active profile: <off>
ports:
hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no)
properties:
device.icon_name = "video-display"
rohit#rohitUb18043LTS:~$ pacmd list-sinks
1 sink(s) available.
* index: 0
name: <auto_null>
driver: <module-null-sink.c>
flags: DECIBEL_VOLUME LATENCY DYNAMIC_LATENCY
state: SUSPENDED
suspend cause: IDLE
priority: 1000
volume: front-left: 65536 / 100% / 0,00 dB, front-right: 65536 / 100% / 0,00 dB
balance 0,00
base volume: 65536 / 100% / 0,00 dB
volume steps: 65537
muted: no
current latency: 0,00 ms
max request: 344 KiB
max rewind: 344 KiB
monitor source: 0
sample spec: s16le 2ch 44100Hz
channel map: front-left,front-right
Stereo
used by: 0
linked by: 0
configured latency: 0,00 ms; range is 0,50 .. 2000,00 ms
module: 15
properties:
device.description = "Dummy Output"
device.class = "abstract"
device.icon_name = "audio-card"
rohit#rohitUb18043LTS:~$ pacmd list-sink-inputs
0 sink input(s) available.
rohit#rohitUb18043LTS:~$
6) I tried the suggested command but it says "No such profile".
rohit#rohitUb18043LTS:~$ pacmd set-card-profile alsa_card.pci-0000_01_00.1 output:analog-stereo+input:analog-stereo
No such profile: output:analog-stereo+input:analog-stereo
rohit#rohitUb18043LTS:~$
Please help - how do I proceed?
Similar issue with "Dummy Sound" on Ubuntu 18.04 also with a NVIDIA card. This solved it for me:
Edit /etc/modprobe.d/alsa-base.conf as root and add options snd-hda-intel dmic_detect=0
Edit /etc/modprobe.d/blacklist.conf as root and add blacklist snd_soc_skl at the end of the file.
After making these changes, reboot your system.
More details (and credits): https://www.linuxuprising.com/2018/06/fix-no-sound-dummy-output-issue-in.html
I had the same problem, and tried the solution given by #maartenor without success.
Eventually I got the sound back by upgrading linux kernel to the last HWE stack, for me it was 4.15.0-106-generic to 5.3.0-59-generic.
The command to do this :
$ sudo apt install linux-generic-hwe-18.04
Edit the file /etc/modprobe.d/alsa-base.conf and add the following lines:
options snd-hda-intel dmic_detect=0
options snd-hda-intel model=laptop-amic enable=yes
The first line is to enable the speaker, the second for the internal microphone.
Good luck!
Got this answer from Reddit. Worked like a charm for me!
Link : https://www.reddit.com/r/linuxmint/comments/fltlrl/no_sound_on_acer_swift_3_with_kernel_53/
Try this..
Open your terminal
sudo apt update && sudo apt install alsamixer
run alsamixer in your terminal.
press arrow right til you go to sound option (if headphone go to HEADPHONES bar).
press M to unmute.
press up/down to adjust the volume.
press Esc to exit alsamixer.
Following steps worked very reliably. It does not fix the audio-losing-after-suspend issue permanently, but instantly as a command to run after back from suspend.
Use lspci to get the audio card location (0000:00:1f.3). On my machine,
$ lspci
00:1f.0 ISA bridge: Intel Corporation H110 ...
00:1f.2 Memory controller: Intel ...
00:1f.3 Audio device: Intel Corporation 100 Series/C230 Series Chipset ...
00:1f.4 SMBus: Intel Corporation 100 Series/C230 Series Chipset ...
Then, (make sure the directories below exist)
$ echo 1 | sudo tee /sys/bus/pci/devices/0000:00:1f.3/remove
$ echo 1 | sudo tee /sys/bus/pci/rescan
I believe the audio driver/hardware is stuck. So we remove the device driver, and rescan the PCI bus to get audio back.
i found answer above not work on my computer, and i solve this problem by accidient , this is script i use , most same as answer above, but at last, u need mute then unmute auidio. sleep a short moment after command is necessary here if you put script in sh file then excute it , use sh -c is for file redirection for root
REST=0.5
#make sure Audio always actived
sudo sh -c 'echo 1 >/sys/bus/pci/rescan'
sleep $REST
DEVICE_ID=$(lspci -D | grep Audio | awk '{print $1}')
sleep $REST
sudo sh -c 'echo 1 >/sys/bus/pci/devices/0000:00:1f.3/remove'
sleep $REST
sudo sh -c 'echo 1 >/sys/bus/pci/rescan'
sleep $REST
#mute then unmute to restart audio
amixer -D pulse sset Master mute
sleep $REST
amixer -D pulse sset Master unmute
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I'm not sure why there is not an option in the top command that does this, as it seems to be a natural request.
If I pipe the output of top to head, then the list doesn't update and I get static output once. I could then bring the watch command into action, which would do the job. But, is there a simpler solution?
I use a trick, specially for batch mode. I pipeline the exit to grep, with option "-A", to show N lines after match.
As in the first line of top there is something like: "load average", I grep that, for instance:
$ top -d 5 -b|grep "load average" -A 15
top - 09:42:34 up 38 min, 1 user, load average: 0.22, 0.39, 0.53
Tasks: 294 total, 2 running, 291 sleeping, 0 stopped, 1 zombie
%Cpu(s): 3.5 us, 0.9 sy, 0.0 ni, 94.6 id, 0.5 wa, 0.3 hi, 0.1 si, 0.0 st
KiB Mem : 8065144 total, 2213800 free, 2733524 used, 3117820 buff/cache
KiB Swap: 24575996 total, 24575996 free, 0 used. 4613128 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2744 lrojas 20 0 3376820 752000 116588 R 20.2 9.3 9:30.01 firefox
1869 lrojas 9 -11 566164 18336 14300 S 5.2 0.2 2:35.78 pulseaudio
2401 lrojas 20 0 740092 200456 87256 S 2.4 2.5 0:57.29 skype
2402 lrojas 20 0 617872 172924 76172 S 2.2 2.1 0:57.17 skype
1333 root 20 0 459028 60992 48024 S 1.6 0.8 0:36.14 Xorg
1838 lrojas 20 0 2103336 184468 64724 S 1.4 2.3 0:56.85 gnome-shell
2359 lrojas 20 0 741212 35068 24620 S 1.4 0.4 0:06.83 gnome-terminal-
2404 lrojas 20 0 1867556 229912 83988 S 0.8 2.9 0:19.63 thunderbird
1249 apache 20 0 461436 10196 3404 S 0.4 0.1 0:00.57 httpd
This way it will continue in batch mode, always showing only the first N lines of output.
Completely standard solution, for any version of top.
> top
then, press n to set maximum tasks displayed.
When operating top, one of the most important key is help (h or ?) to see the available options (n is given in help).
UPDATE (after the the comment):
PERSONAL Configuration File might help for the batch mode. Run top then set the maximum tasks displayed with n and use the W interactive command to create or update the configuration file. top will be ran according to the configuration file next time.
Perhaps you should add the -b parameter which runs top in the batch mode: watch -n 5 'top -b -d 5 | head -n 10'
You can make config file for top (for example: run top command in interactive mode, then press "n" and write limit for number of processes, then press "W" to save this in your configuration file).
In the next step, you can run top in batch mode; parameter in config file limits output to requested value. So, then simple:
top -b > top.log
will be enough.
The solution for MAC is :
top -a -n20 | awk 'FNR>=11 && FNR<=31{print $0};FNR==31{exit}' > cpustat.txt
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I have some mpegs from my camcorder and I'm trying to figure out when they were recorded.
So far, I have tried transcode:
tcprobe -i M2U00249.MPG -H 10 -d258
Which resulted in:
[scan_pes.c] SCR= 0 ( 0) unit=0 # offset 0.0000 (sec)
[tcprobe] MPEG program stream (PS)
[tcprobe] summary for M2U00249.MPG, (*) = not default, 0 = not detected
import frame size: -g 720x480 [720x576] (*)
aspect ratio: 16:9 (*)
frame rate: -f 29.970 [25.000] frc=4 (*)
PTS=0.2057, frame_time=33ms bitrate=9100 kbps
audio track: -a 0 [0] -e 48000,16,5 [48000,16,2] -n 0x2000 [0x2000] (*)
PTS=0.0895, bitrate=448 kbps
-D 3 --av_fine_ms 16 (frames & ms) [0] [0]
MPlayer:
mplayer -identify M2U00249.MPG
Which resulted in:
Playing M2U00249.MPG.
ID_VIDEO_ID=0
ID_AUDIO_ID=128
MPEG-PS file format detected.
VIDEO: MPEG2 720x480 (aspect 3) 29.970 fps 9100.0 kbps (1137.5 kbyte/s)
ID_FILENAME=M2U00249.MPG
ID_DEMUXER=mpegps
ID_VIDEO_FORMAT=0x10000002
ID_VIDEO_BITRATE=9100000
ID_VIDEO_WIDTH=720
ID_VIDEO_HEIGHT=480
ID_VIDEO_FPS=29.970
ID_VIDEO_ASPECT=0.0000
ID_AUDIO_FORMAT=8192
ID_AUDIO_BITRATE=0
ID_AUDIO_RATE=0
ID_AUDIO_NCH=0
ID_START_TIME=0.09
ID_LENGTH=122.06
ID_SEEKABLE=1
ID_CHAPTERS=0
FFmpeg:
ffprobe -show_format -show_streams M2U00243.MPG
Which resulted in:
index=0
codec_name=mpeg2video
codec_long_name=MPEG-2 video
codec_type=video
codec_time_base=1001/60000
codec_tag_string=[0][0][0][0]
codec_tag=0x0000
width=720
height=480
has_b_frames=1
sample_aspect_ratio=32:27
display_aspect_ratio=16:9
pix_fmt=yuv420p
id=0x1e0
r_frame_rate=30000/1001
avg_frame_rate=30000/1001
time_base=1/90000
start_time=0.178456
duration=282.682400
[/STREAM]
[STREAM]
index=1
codec_name=ac3
codec_long_name=ATSC A/52A (AC-3)
codec_type=audio
codec_time_base=0/1
codec_tag_string=[0][0][0][0]
codec_tag=0x0000
sample_rate=48000.000000
channels=6
bits_per_sample=0
id=0x80
r_frame_rate=0/0
avg_frame_rate=125/4
time_base=1/90000
start_time=0.079722
duration=282.720000
[/STREAM]
[FORMAT]
filename=M2U00243.MPG
nb_streams=2
format_name=mpeg
format_long_name=MPEG-PS format
start_time=0.079722
duration=282.781134
size=330334208.000000
bit_rate=9345296.000000
[/FORMAT]
None of these seems to have the time that the video was recorded. Is there something I'm missing or is the only way to get the recording time:
stat -c %y M2U00249.MPG
There is no required record of the absolute encode time in an MPEG program stream. Getting the last modified time from the file system is your best bet.
I use mediainfo to get the recorded date of videos. I've not tried it with MPGs, but I shouldn't think it will be any different.
sudo apt-get -y install mediainfo
And then mediainfo <filename>
Or mediainfo -f <filename> for full verbosity
https://forums.linuxmint.com/viewtopic.php?t=278052
apt-get install mediainfo-gui
in nemo or caja, right click on .mp4, then choose other application, Mediainfo-gui, choose view --> Html, and Debug --> Complete
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What is equivalent of Linux's 'free' command on FreeBSD v8.1?
I am calling 'free' from my application and reporting the results in my application's log file. What would be the replacement when porting to FreeBSD v8.1?
Here is a sample run of 'free' on Linux:
[centos4x32 ~] free
total used free shared buffers cached
Mem: 774452 733044 41408 0 98040 328880
-/+ buffers/cache: 306124 468328
Swap: 2031608 224 2031384
vmstat has default output which is similar in nature and takes many options that give extremely detailed information, eg vmstat -m
swapinfo would cover the swap part
top -d1 causes top to print one screen and exit, and the banner is very similar to free. Use top -d1 | head -n 7 to see only the banner
Maybe freecolor command is a choice. Install it:
# cd /usr/ports/sysutils/freecolor
# make install clean
Use it:
# freecolor
Physical : [#################################..] 94% (1907820/2018396)
Swap : [###################################] 100% (1048540/1048540)
# freecolor -m -o
total used free shared buffers cached
Mem: 1971 107 1863 0 0 0
Swap: 1023 0 1023
Please refer FreeBSD find out RAM size Including Total Amount of Free and Used Memory Size.
vmstat -s gives some more human-readable or script-parseable information, including listing the page size. Otherwise, it gives output in numbef of pages. With no options, vmstat gives a brief summary.
The vmstat command also exists on NetBSD.
just use old good htop
install htop
pkg install htop
to run
htop
Other option:
# vmstat fre
procs memory page faults cpu
r b w avm fre flt re pi po fr sr in sy cs us sy id
0 0 0 13475M 24M 689 1 2 0 344 394 14693 37734 60809 7 43 50
You can use this script.
# fetch http://www.cyberciti.biz/files/scripts/freebsd-memory.pl.txt
# mv freebsd-memory.pl.txt /usr/local/bin/free
# chmod +x /usr/local/bin/free
source: http://www.cyberciti.biz/faq/freebsd-command-to-get-ram-information/
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I use VNC to connect to a Linux workstation at work. At work I have a 20" monitor that runs at 1600x1200, while at home I use my laptop with its resolution of 1440x900.
If I set the vncserver to run at 1440x900 I miss out on a lot of space on my monitor, whereas if I set it to run at 1600x1200 it doesn't fit on the laptop's screen, and I have to scroll it all the time.
Is there any good way to resize a VNC session on the fly?
My VNC server is RealVNC E4.x (I don't remember the exact version) running on SuSE64.
Real VNC server 4.4 includes support for Xrandr, which allows resizing the VNC. Start the server with:
vncserver -geometry 1600x1200 -randr 1600x1200,1440x900,1024x768
Then resize with:
xrandr -s 1600x1200
xrandr -s 1440x900
xrandr -s 1024x768
Found out that the vnc4server (4.1.1) shipped with Ubuntu (10.04) is patched to also support changing the resolution on the fly via xrandr. Unfortunately the feature was hard to find because it is undocumented. So here it is...
Start the server with multiple 'geometry' instances, like:
vnc4server -geometry 1280x1024 -geometry 800x600
From a terminal in a vncviewer (with: 'allow dymanic desktop resizing' enabled) use xrandr to view the available modes:
xrandr
to change the resulution, for example use:
xrandr -s 800x600
Thats it.
I'm running TigerVNC on my Linux server, which has basic randr support.
I just start vncserver without any -randr or multiple -geometry options.
When I run xrandr in a terminal, it displays all the available screen resolutions:
bash> xrandr
SZ: Pixels Physical Refresh
0 1920 x 1200 ( 271mm x 203mm ) 60
1 1920 x 1080 ( 271mm x 203mm ) 60
2 1600 x 1200 ( 271mm x 203mm ) 60
3 1680 x 1050 ( 271mm x 203mm ) 60
4 1400 x 1050 ( 271mm x 203mm ) 60
5 1360 x 768 ( 271mm x 203mm ) 60
6 1280 x 1024 ( 271mm x 203mm ) 60
7 1280 x 960 ( 271mm x 203mm ) 60
8 1280 x 800 ( 271mm x 203mm ) 60
9 1280 x 720 ( 271mm x 203mm ) 60
*10 1024 x 768 ( 271mm x 203mm ) *60
11 800 x 600 ( 271mm x 203mm ) 60
12 640 x 480 ( 271mm x 203mm ) 60
Current rotation - normal
Current reflection - none
Rotations possible - normal
Reflections possible - none
I can then easily switch to another resolution (f.e. switch to 1360x768):
bash> xrandr -s 5
I'm using TightVnc viewer as the client and it automatically adapts to the new resolution.
As this question comes up first on Google I thought I'd share a solution using TigerVNC which is the default these days.
xrandr allows selecting the display modes (a.k.a resolutions) however
due to modelines being hard
coded
any additional modeline such as "2560x1600" or "1600x900" would need to
be added into the
code. I
think the developers who wrote the code are much smarter and the hard
coded list is just a sample of values. It leads to the conclusion that
there must be a way to add custom modelines and man xrandr confirms
it.
With that background if the goal is to share a VNC session between two
computers with the above resolutions and assuming that the VNC server is
the computer with the resolution of "1600x900":
Start a VNC session with a geometry matching the physical display:
$ vncserver -geometry 1600x900 :1
On the "2560x1600" computer start the VNC viewer (I prefer
Remmina) and connect to the remote VNC
session:
host:5901
Once inside the VNC session start up a terminal window.
Confirm that the new geometry is available in the VNC session:
$ xrandr
Screen 0: minimum 32 x 32, current 1600 x 900, maximum 32768 x 32768
VNC-0 connected 1600x900+0+0 0mm x 0mm
1600x900 60.00 +
1920x1200 60.00
1920x1080 60.00
1600x1200 60.00
1680x1050 60.00
1400x1050 60.00
1360x768 60.00
1280x1024 60.00
1280x960 60.00
1280x800 60.00
1280x720 60.00
1024x768 60.00
800x600 60.00
640x480 60.00
and you'll notice the screen being quite small.
List the modeline (see xrandr article in ArchLinux wiki) for
the "2560x1600" resolution:
$ cvt 2560 1600
# 2560x1600 59.99 Hz (CVT 4.10MA) hsync: 99.46 kHz; pclk: 348.50 MHz
Modeline "2560x1600_60.00" 348.50 2560 2760 3032 3504 1600 1603 1609 1658 -hsync +vsync
or if the monitor is old get the GTF timings:
$ gtf 2560 1600 60
# 2560x1600 # 60.00 Hz (GTF) hsync: 99.36 kHz; pclk: 348.16 MHz
Modeline "2560x1600_60.00" 348.16 2560 2752 3032 3504 1600 1601 1604 1656 -HSync +Vsync
Add the new modeline to the current VNC session:
$ xrandr --newmode "2560x1600_60.00" 348.16 2560 2752 3032 3504 1600 1601 1604 1656 -HSync +Vsync
In the above xrandr output look for the display name on the second
line:
VNC-0 connected 1600x900+0+0 0mm x 0mm
Bind the new modeline to the current VNC virtual monitor:
$ xrandr --addmode VNC-0 "2560x1600_60.00"
Use it:
$ xrandr -s "2560x1600_60.00"
I think your best best is to run the VNC server with a different geometry on a different port. I would try based on the man page
$vncserver :0 -geometry 1600x1200
$vncserver :1 -geometry 1440x900
Then you can connect from work to one port and from home to another.
Edit: Then use xmove to move windows between the two x-servers.
Interestingly no one answered this. In TigerVNC, when you are logged into the session. Go to System > Preference > Display from the top menu bar ( I was using Cent OS as my remote Server). Click on the resolution drop down, there are various settings available including 1080p. Select the one that you like. It will change on the fly.
Make sure you Apply the new setting when a dialog is prompted. Otherwise it will revert back to the previous setting just like in Windows
Guys this is really simple.
login via ssh into your pi
execute
vncserver -geometry 1200x1600
This will generate a new session :1
connect with your vnc client at ipaddress:1
Thats it.
Adding to Nathan's (accepted) answer:
I wanted to cycle through the list of resolutions but didnt see anything for it:
function vncNextRes()
{
xrandr -s $(($(xrandr | grep '^*'|sed 's#^\*\([0-9]*\).*$#\1#')+1)) > /dev/null 2>&1 || \
xrandr -s 0
}
It gets the current index, steps to the next one and cycles back to 0 on error (i.e. end)
EDIT
Modified to match a later version of xrandr ("*" is on end of line and no leading resolution identifier).
function vncNextRes()
{
xrandr -s $(($(xrandr 2>/dev/null | grep -n '\* *$'| sed 's#:.*##')-2)) || \
xrandr -s 0
}
Solution by #omiday worked for me in Xvnc TigerVNC 1.1.0, so I condensed it into a single bash function vncsize x y. Use it like this: vncsize 1400 1000. It works for any VNC output name, "default" or "VNC-0".
function vncsize {
local x=$1 y=$2
local mode
if mode=$(cvt "$x" "$y" 2>/dev/null)
then
if [[ $mode =~ "Modeline (.*)$" ]]
then
local newMode=${BASH_REMATCH[1]//\"/}
local modeName=${newMode%% *}
local newSize=( ${modeName//[\"x_]/ } )
local screen=$(xrandr -q|grep connected|cut -d' ' -f1)
xrandr --newmode $newMode
xrandr --addmode "$screen" "$modeName"
xrandr --size "${newSize[0]}x${newSize[1]}" &&
return 0
else
echo "Unable to parse modeline for ($x $y) from $mode"
return 2
fi
else
echo "\`$x $y' is not a valid X Y pair"
return 1
fi
}
Perhaps the most ignorant answer I've posted but here goes: Use TigerVNC client/viewer and check 'Resize remote session to local window' under Screen tab of options.
I don't know what the $%## TigerVNC client tells remote vncserver or xrandr or Xvnc or gnome or ... but it resizes when I change the TigerVNC Client window.
My setup:
Tiger VNC Server running on CentOS 6. Hosting GNOME desktop. (Works with RHEL 6.6 too)
Windows some version with Tiger VNC Client.
With this the resolution changes to fit the size of the client window no matter what it is, and it's not zooming, it's actual resolution change (I can see the new resolution in xrandr output).
I tried all I could to add a new resolution to the xrandr, but to no avail, always end up with 'xrandr: Failed to get size of gamma for output default' error.
Versions with which it works for me right now (although I've not had issues with ANY versions in the past, I just install the latest using yum install gnome-* tigervnc-server and works fine):
OS: RHEL 6.6 (Santiago)
VNC Server:
Name : tigervnc-server
Arch : x86_64
Version : 1.1.0
Release : 16.el6
# May be this is relevant..
$ xrandr --version
xrandr program version 1.4.0
Server reports RandR version 1.4
$
# I start the server using vncserver -geometry 800x600
# Xvnc is started by vncserver with following args:
/usr/bin/Xvnc :1 -desktop plabb13.sgdcelab.sabre.com:1 (sg219898) -auth /login/sg219898/.Xauthority
-geometry 800x600 -rfbwait 30000 -rfbauth /login/sg219898/.vnc/passwd -rfbport 5901 -fp catalogue:/e
tc/X11/fontpath.d -pn
# I'm running GNOME (installed using sudo yum install gnome-*)
Name : gnome-desktop
Arch : x86_64
Version : 2.28.2
Release : 11.el6
Name : gnome-session
Arch : x86_64
Version : 2.28.0
Release : 22.el6
Connect using Tiger 32-bit VNC Client v1.3.1 on Windows 7.
I'm not sure about linux, but under windows, tightvnc will detect and adapt to resolution changes on the server.
So you should be able to VNC into the workstation, do the equivalent of right-click on desktop, properties, set resolution to whatever, and have your client vnc window resize itself accordingly.
On the other hand, if there's a way to
move an existing window from one
X-server to another, that might solve
the problem.
I think you can use xmove to move windows between two separate x-servers. So if it works, this should at least give you a way to do what you want albeit not as easily as changing the resolution.
As far as I know there's no way to change the client's resolution just using VNC, as it is just a "monitor mirroring" application.
TightVNC however (which is a VNC client and server application) can resize the screen on the client side, i.e. making everything a little smaller (similar to image resizing techniques in graphics programs). That should work if you don't use too small font sizes. VNC should theoretically be compatible between different VNC applications.
I have a simple idea, something like this:
#!/bin/sh
echo `xrandr --current | grep current | awk '{print $8}'` >> RES1
echo `xrandr --current | grep current | awk '{print $10}'` >> RES2
cat RES2 | sed -i 's/,//g' RES2
P1RES=$(cat RES1)
P2RES=$(cat RES2)
rm RES1 RES2
echo "$P1RES"'x'"$P2RES" >> RES
RES=$(cat RES)
# Play The Game
# Finish The Game with Lower Resolution
xrandr -s $RES
Well, I need a better solution for all display devices under Linux and Similars S.O
I think that depends on your window manager.
I'm a windows user, so this might be a wrong guess, but: Isn't there something called X-Server running on linux machines - at least on ones that might be interesting targets for VNC - that you can connect to with "X-Clients"?
VNC just takes everything that's on the screen and "tunnels it through your network". If I'm not totally wrong then the "X" protocol should give you the chance to use your client's desktop resolution.
Give X-Server on Wikipedia a try, that might give you a rough overview.