I try to build a reproducible automated build environment based on Debian 8.1 Jessie.
I created a boot iso image based on a netinstall image and put a preseed.cfg file in int for automatic installation.
I managed to get it bootable with BIOS and UEFI and can install a KDE Developer Debian in VMWare Workstation 11 fully automated.
I have also a server iso image to install a debian Server with Jenkins, both with BIOS and UEFI Boot.
But after the installation, the Version with UEFI Boot shows a black Screen when started.
I can blindly log in, start the gui with "startx" and see my installed xfce desktop. When i quit xfce the console is usable and visible.
I tried suggested bootparameters "nomodeset" and "vga=Linux" that i found with google to no avail.
I also tried to debug the boot prozess, to find out which command leads to a blank screen, but i did not find the right place to delay the processes at bootup so i can see when the messages dissapear (quiet bootparameter was removed :-)
I also tried to reset the console to no avail.
Can anybode point me to a tool that does the same "switching" like X so the console is useable?
Can anybody give me some hints how to debug the bootprocess to find out which command is causing this behaviour?
I dont want to install X because this should be a headless server system later.
I managed to get my system to boot using the kernel command line modprobe.blacklist=vmwgfx, or placing 'blacklist vmwgfx' in /etc/modprobe.d/*.conf
I assume it is some bug in the vmwgfx module, however as this workaround works for me I have no immediate need to investigate further.
Related
I had installed ubuntu 18 in my acer aspire. Then i installed windows 10 in dual boot mode. After installing the windows i can not access the ubuntu. The grub loader is not shown.
And there is no way to access my ubuntu.
I even tried to change the path of bootloader to ubuntu in cmd.
But no success. Please help me out.
check this link: https://askubuntu.com/questions/602602/cant-access-ubuntu-after-creating-dual-boot
"YOUR COMPUTER BOOTS DIRECTLY TO WINDOWS
This is a common problem and if you do not get a GRUB menu , re-installing or repairing grub will NOT HELP
Every BIOS is different, it might look like one of the following pictures:
UEFI 1
UEFI 2
Notice the "UEFI Boot Option Priority" or "Boot Option Menu" . Usually Windows is the default and Ubuntu (or as in the second picture elementary OS) will be an option.
Once you select Ubuntu on the UEFI boot menu you will then get a grub menu. You should be able to boot either Ubuntu or Windows from the grub menu.
Another issue that could make the system boot directly to Windows (without even showing the GRUB menu) is if either Windows took hold of the boot manager or after installing Ubuntu, the EFI partition was not properly configured for Windows. To solve this, simply go to Windows and open a terminal, then type the following (Need Administrative Privileges):
bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi This will configure the Windows Boot Manager to take into consideration the GRUB Boot Manager. This could still happen even after running the Boot Repair from within Ubuntu. So making sure that Windows reads the Ubuntu EFI partition will solve it."
I have been trying maybe weeks now to figure out how to configure VirtualBox to have 1366x768 resolution on a linux guest, which is on a windows 8.1 host.
My configuration:
Windows 8.1 as host
Linuxmint 17.1 as guest (tried ubuntu and debian too but no luck)
Virtualbox 4.3.26 and its extension pack
Laptop is powerful with 16GB ram and 4GB Nvdia
My problem is that it doesn't matter what I used, nothing worked.
Please do not post the answers on most known websites, I tried them already.
Once your VM is started, you need to run the VBox Linux Guest Additions.
First try to run it from the VirtualBox window's menu:
Devices >> Insert guest Additions CD image...
and follow the instructions.
If that fails, open a terminal and go to the directory where you CD reader is mounted (/run/media/ on Fedora or /media/ on Ubuntu for example).
Then type command sudo ./VBoxLinuxAdditions.run
Complete instructions can be found on the VirtualBox user manual
Once Guest Additions are installed, reboot your virtual machine. You should be able to resize your screen to your heart's content.
I installed the new VirtualBox 5.0.0_BETA2 and it solved my all problems. Great product is getting ready! Cant wait the latest release. more than a PERFECT software. Now you can remove top bar and/or bottom bar easily. Show what you need.
If you are having problem like me with 1366x768 I recommend you to install latest versin of VB even if it is Beta!
I have both windows and linux installed.
I created a new partition but got Grub error:UNKNOWN FILESYSTEM on restart. Then I used windows recovery CD and Bootrec/fixmbr command to get Grub menu back.
But now I don't see the boot menu.laptop simply boots into windows, also I am unable to boot from any other CD or USB
You need to reinstall grub on the boot sector. If you use Ubuntu, there is a very easy way to fix it with Ubuntu's live CD using the boot-repair tool.
I'm not sure if this will work with other Linux distributions but It's worth trying.
If you can't boot from CD or USB you should check your boot priority in the BIOS. Or try to get to boot selection menu (usually by pressing F12) and choose CD\USB over there, anyways, the answer here is in the BIOS and not related to the grub
In short, I need to understand how to configure eclipse to run "optirun gbd" instead of "gdb". An explanation of what exactly I'm trying to accomplish follows.
I need to run my debug app in eclipse such that it will use the nvidia optimus card instead of the integrated card. My app requires opengl support that is only available this way.
I've got a laptop with an nvidia optimus video card. I'm running linux (ubuntu). I've successfully set up bumblebee such that I can take advantage of the optimus technology. This requires that, to use the nvidia card, I run a given program "foo" with the program "optirun:" optirun foo.
I need to configure eclipse to launch my program in debug mode under optirun. If I run from command line: optirun gdb app everything works as expected.
Edit: Changing the "GDB Debugger" field inside the debug configuration to optirun gdb does not work. Lanching eclipse by optirun eclipse does, however. But this is a detriment to battery life.
Go to "Debug Configurations", open "Debugger" tab. Change "GDB debugger" from gdb to optirun gdb.
Works in Eclipse Juno, Ubuntu 12.04.
Since I'm sure eclipse uses the shell to execute the program, a workaround is to alias gdb to optirun gdb in ~/.bashrc
I look into this issue today and I found another solution. As long as you have Bumblebee installed (http://www.bumblebee-project.org/) and you know you can attach optirun to an executable (try with glxgears for example) you can attach it to cuda-gdb.
What I did is create a script:
#!/bin/bash
optirun /usr/local/cuda/bin/cuda-gdb $*
And save it to /usr/local/cuda/bin or somewhere else it doesn't matter, with the appropriate permissions for execution (755).
What it does is very simple, it runs optirun cuda-gdb args where args is whatever the command line sends it.
In terminal just run opti_cuda-gdb with or without arguments.
For example I named it opti_cuda-gdb and placed it in that directory (which conveniently is added to the path if CUDA is properly configured).
If you use an IDE to develop, like say Netbeans, point the debbuger executable to that script.
I've been successfully compiled and debbuged code using CuSparse and CuBlas with NetBeans running in a SAMSUNG SF410 with Nvidia Optimus and Ubuntu 11.04 and 11.10.
I'm open to provide further details if you think I omitted something.
How to boot a linux kernel + dependencies and auto run a Qt application so the linux environment doesn't show up (only the Qt GUI is visible)?
on x86 PCs
should be able to run from RAM (of course)
Perhaps you could look at how this guy did it:
http://www.embedded-bits.co.uk/2011/1-second-linux-boot-to-qt/
You could start with a minimal linux distribution such as Ubuntu Server and install only X-Windows (without any Window Manager) on top of it: https://help.ubuntu.com/community/ServerGUI
Then, start your Qt application by adding a call to it in the .xinitrc initialization script.
Might be helpfull Linux Journal KDE Kiosk Mode
Why not run x server without window manager and the running the application in full screen mode on that x server.
to start x server type startx
and then you must run your application in fullscreen mode
(your app must support this mode by argument switch like this)
./myapp --fullscreen
I have never tried this, but try google for 'framebuffer'. It should allow you to run a single application with no need for X server.