I want to add multiple Virtual Displays to my Linux PC, for VNC Purposes. I have an NVIDIA GeForce GTX 750 Ti and an Ryzen 3 1200 with no On-Board Graphics.
I have already tried:
The Option "ConnectedMonitor" in /etc/X11/xorg.conf (Works, but only allows for one output at the moment, because xrandr only shows 5 outputs. When I try and add the fifth output tho, nvidia-settings throws me some kind of error, that i can only use 4 Monitors, and other programs just straight up crash when they try to change the X Screen Config...)
The EVDI Driver (After the Modprobe the X Screen crashes as expected, but xrandr --listproviders doesn't show the driver and xrandr --setprovideroutputsource doesn't work either...)
Wayland (I am an KDE Plasma user and Wayland support of KDE is Trash with the proprietary NVIDIA Driver)
Adding the Dummy Driver (Doesn't work because of NVIDIA's Proprietary trash Xinerama [I also have multiple Physical Displays])
Is it maybe possible to somehow use the nouveau driver at the same time? Or am i just adding the Dummy Driver wrong? Is it possible to get the EVDI Driver working?
I really hope someone helps me very soon...
Related
I am building kernels in my company.
Currently we have asurface 3 (non pro) device here and it sould boot with our own kernel and miniroot.
so far it boots up, but doesnt detect the eMMC memory.
IN the future more eMMC devices should be supported so I added a lot of mmc drivers directly into the kernel. We are limited to 90MB miniroot size, so every driver usually is build into the kernel
here's the current mmc config
cat kernel/config-x86_64-4.4.11 | grep MMC
# CONFIG_PCI_MMCONFIG is not set
CONFIG_MMC=y
CONFIG_MMC_DEBUG=y
# MMC/SD/SDIO Card Drivers
CONFIG_MMC_BLOCK=m
CONFIG_MMC_BLOCK_MINORS=8
CONFIG_MMC_BLOCK_BOUNCE=y
CONFIG_MMC_TEST=y
# MMC/SD/SDIO Host Controller Drivers
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PCI=y
# CONFIG_MMC_RICOH_MMC is not set
CONFIG_MMC_SDHCI_ACPI=y
CONFIG_MMC_SDHCI_PLTFM=y
CONFIG_MMC_WBSD=y
CONFIG_MMC_TIFM_SD=y
CONFIG_MMC_SDRICOH_CS=y
CONFIG_MMC_CB710=y
CONFIG_MMC_VIA_SDMMC=y
CONFIG_MMC_VUB300=y
CONFIG_MMC_USHC=y
CONFIG_MMC_USDHI6ROL0=y
# CONFIG_MMC_REALTEK_USB is not set
CONFIG_MMC_TOSHIBA_PCI=y
CONFIG_MMC_MTK=y
CONFIG_MMC_SDHCI=y
CONFIG_MMC_SDHCI_PCI=y
CONFIG_MMC_SDHCI_ACPI=y
CONFIG_MMC_SDHCI_PLTFM=y
Still the mmcblk device does not show up.
any suggestions on how to make this work? Any modules I might be missing?
Cheers
Well the Surface 3 Tablet works a little bit different
After adding GPIO kernel modules the eMMC memory got recognized and usable
I am using Ubuntu 14.04 with two graphics card - first from Intel and the second one is NVIDIA Corporation GF108M [GeForce GT 635M]. On Intel card every qml applications works well, but on nvidia card, even the simplest qml, not. When I am resizing window, the window content "flows" faster than window is resizing and disappears outside window frame leaving artifacts. Just watch this video. To enable nvidia card I am using optirun from bumblebee package. Please help me to solve this problem.
edit: On NVIDIA Corporation GF119M [GeForce GT 520M] is the same problem.
I removed bumblebee and installed nvidia-prime (remember to set nvidia in nvidia-setting and remove bumblebee nvidia blacklists). Problem gone, so the problem is with the bumblebee.
I am trying to draw things on the screen without an X11 server. (I want my program to be in initrd, so I don't want to bloat it with X11.)
It's easy when I have /dev/fb0, but when I use Xen, I don't have it (also I am not sure how that works - the passing of vesafb to the kernel by grub and such).
I've tried SDL but it won't work without /dev/fb0 or X11. How does X11 work without /dev/fb0? It seems like no matter what I do X11 will always work... yet all libraries (like directfb, SDL, etc.) will fail.
the /dev/fb0 handeling with kernel. you must enable:
CONFIG_FRAMEBUFFER_CONSOLE if you want to enable 'df' for console
CONFIG_DRM and VGA card driver in this.
FB and your VGA card driver in this.
After finally managing to get my code to compile with OpenCL, I cannot seem to get the output binary to run! This is on my linux laptop running Kubuntu 13.10 x64
The error I get is (Printed from cl::Error):
ERROR: clGetPlatformIDs
-1001
I found this post but there does not seem to be a clear solution.
I added myself to the video group but this does not seem to work.
With regards to the ICD profile... I am not sure what I need to do - shouldn't this be included with the cuda toolkit? If not, where could I download one?
EDIT: It seems I have an ICD file in my system under /usr/share/nvidia-331/nvidia.icd. It contains the following text:
libnvidia-opencl.so.1
The only file in my system that resembles this is:
/usr/lib/nvidia-331/libnvidia-opencl.so.331.20
Is my ICD profile somehow wrong? Does anyone know a way to fix it?
(Mods: I am not sure if this post should be moved to AskUbuntu seeing as it was an issue related to Linux bumblebee rather than OpenCL itself?)
Ok so I managed to solve the issue after loads of effort.
There are two things that I needed to do:
Getting ICD to work
create a symbolic link from /usr/share/nvidia-331/nvidia.icd to /etc/OpenCL/vendors
sudo ln -s /usr/share/nvidia-331/nvidia.icd /etc/OpenCL/vendors
NOTE: In most cases you would need to replace nvidia-331 with whatever driver you are using - most commonly nvidia-current
I am really curious as to why this isn't done automatically when installing the cuda toolkit - but I have noticed that OpenCL programs will not work without this step!
Nvidia Optimus with Bumblebee
The reason why this was so complicated to get working was that I have an nvidia optimus laptop with poor driver support on linux. To fix this I have bumblebee installed to allow switching between my nvidia card and intel card.
However, because I am using bumblebee - the nvidia graphics card (and nvidia driver) will be unloaded unless explicitly told so. In order to use OpenCL, we need to turn on the nvidia graphics card.
To do this we need to explicitly tell bumblebee to turn the nvidia card on by using the commands optirun or primusrun:
optirun myopenclprogram
Note however, because all that matters is that the nvidia card is turned on and the drivers are loaded, you do not need to keep using optirun myprogram to get this to work (as this always involves the initial delay of waiting for the graphics card to be initialised).
You can run optirun kate for example and this would turn on the nvidia graphics card. You can then, in a separate terminal just run you opencl program without optirun and it will work just fine since the graphics card has already been turned on (and will remain on as long as you leave e.g. kate running).
You will notice that there is no delay in starting your program this time! This saves you alot of waiting - especially if you are developing the opencl program in question.
Once again, as long as you keep the nvidia graphics card turned on, your opencl program will work.
I will probably contact the bumblebee devs to see if there is an easier way to get this to work and report what they say here. Hopefully there is some way to turn the nvidia card on and off without requiring to keep a program (like kate in my example) running.
I hope this helps anyone trying to use OpenCL on linux laptops with bumblebee in the future (I could not find any clear cut solutions myself)
EDIT2: Turning you graphics card on and off can be done as follows for bumlebee users:
Turn graphics card on and load nvidia module
sudo tee /proc/acpi/bbswitch <<< ON
sudo modprobe nvidia
Turn graphics card off (nvidia module is automatically unloaded)
sudo tee /proc/acpi/bbswitch <<< OFF
To share some add info. I have installed intel opencl version on Ubuntu 13.10 saucy. Problem has been the same: -1001 error. I solved it by link analogicly to previous post:
sudo ln -sf /opt/intel/opencl-1.2-3.2.1.16712/etc/intel64.icd /etc/OpenCL/vendors/nvidia.icd
I am working on an appliance that runs on Linux (Ubuntu 10.04 for now) and x86-64 Intel based PC. I need to completely customize the boot screens - no BIOS messages, and either (a) no screen output until X is launched or (b) custom screen output via VESA/VBE.
(b) looks hard to achieve because none of the framebuffer drivers (vesafb, uvesafb) seem to support addressing pixels on more than 2 monitors being driven by the same graphics card
So, I'm looking at (a) : no output on screen until X is launched. This should mean no Dell BIOS output, no Ubuntu splash screen, no console output.
Any ideas will be much appreciated.
I don't know much about the framebuffer stuff, but I can tell you for sure that you'll have no control over the BIOS output from Linux.
In the boot process, BIOS comes first, then the boot loader, then Linux. So when Linux appears, the BIOS stuff is done for long.