Original url:
https://askubuntu.com/questions/235760/unity-does-not-appear-after-installing-proprietary-nvidia-drivers-gpu-has-falle
https://devtalk.nvidia.com/default/topic/971914/gpu-at-0000-02-00-0-has-fallen-off-the-bus/
https://devtalk.nvidia.com/default/topic/1018638/linux/gpu-loss/
[五 6月 15 10:33:44 2018] nvidia-uvm: Loaded the UVM driver in 8 mode, major device number 242
[五 6月 15 10:41:22 2018] NVRM: GPU at PCI:0000:04:00: GPU-eabbe3ce-4916-344e-0675-d5394f05b6a9
[五 6月 15 10:41:22 2018] NVRM: GPU Board Serial Number:
[五 6月 15 10:41:22 2018] NVRM: Xid (PCI:0000:04:00): 79, GPU has fallen off the bus.
[五 6月 15 10:41:22 2018] NVRM: GPU at 0000:04:00.0 has fallen off the bus.
[五 6月 15 10:41:22 2018] NVRM: GPU is on Board .
[五 6月 15 10:41:22 2018] NVRM: A GPU crash dump has been created. If possible, please run
NVRM: nvidia-bug-report.sh as root to collect this data before
NVRM: the NVIDIA kernel module is unloaded.
====================
down vote
Solution 1 (Not working for me) - Some users have reported that doing the following helped them:
Edit your /etc/rc.local file: sudo nano /etc/rc.local and add the following line before the exit 0 statement:
/usr/bin/nvidia-smi -pm 1
Save and reboot. This will set your video card to Persistence Mode. To see if it worked, after reboot type:
/usr/bin/nvidia-smi -q | grep -i Persistence and if you see:
Persistence Mode : Enabled
Then you know it is Enabled
Solution 2 (Not working for me) - Some users have reported that doing the following helped them:
Edit your grub menu:
sudo nano /etc/default/grub and in the line that says:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
Add to it one or all of the following kernel options:
acpi=noirq
thermal.off=1
For example if add both it should look like this:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=noirq thermal.off=1"
Now save and type update-grub. Then reboot.
For anybody with similar problems, if they have done everything, I recommend also trying out the tests I have conducted. That way you know if it is Ubuntu, the video card or any other hardware.
After almost 3 days of battle, I managed (If you read the whole question) to discard everything but the motherboard. So I took the motherboard out, did some cleaning on it and put it back on. Just to clear any confusion, when I say cleaning I literally mean, taking the motherboard out, removing anything connected to it or that it generates any type of electrical current (Like the CR2032 battery) and put the motherboard under a hose with a lot of water pressure. After cleaning it with a lot with water, I left it to dry for 2 days minimum and put it back together.
Everything is working perfectly and I can happily say that it works in the 32 and 64 bit versions of 12.04, 12.10 and even 13.04 (Which I had to test when I had the problem since I thought it was an Ubuntu issue at the time).
So if you happen to have done everything in the question and you still have problems, the most likely cause might be either an option in the BIOS (Which I can not cover here because of the amount of BIOS settings that exist) or that your hardware needs some maintenance.
Hope this helps somebody because it took me too much work to figure it out so it might save someone else time.
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