This has nothing to do with NVIDIA's proprietary driver. If anything
it's a kernel issue, as vgaarb lives in the kernel and the nvidia driver
doesn't need it.
If you're facing any other issue with the nvidia driver, please file a
separate bug report.
** Also affects: linux (Ubuntu)
I confirm that the problem exists also on a updated install from Utopic
to Vivid 15.04, but Nouveau driver is working just fine.
To use Nouveau driver I did the following:
sudo apt-get remove --purge nvidia-settings nvidia-349 nvidia-prime
nvidia-opencl-icd-349
sudo add-apt-repository
I confirm that the problem exist on a fresh install of Vivid 15.04
(STABLE).
System Info: Ubuntu GNOME 15.04
Linux z50 3.19.0-15-generic #15-Ubuntu SMP Thu Apr 16 23:32:37 UTC 2015 x86_64
x86_64 x86_64 GNU/Linux
Nvidia Card: GeForce GT840M
dmesg | grep vgaar
[0.265967] vgaarb: setting as
System Info: Ubuntu 14.04.2
Linux 3.13.0-49-generic #83-Ubuntu SMP Fri Apr 10 20:11:33 UTC 2015 x86_64
x86_64 x86_64 GNU/Linux
Nvidia Card: GeForce GTX 860M
lspci lists the Card as 3D Controller. Only after adding the xorg-edgers PPA
the Additional Drivers programs offers some nvidia drivers
** Also affects: ubuntu-drivers-common (Debian)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1381175
Title:
vgaarb module
What does this break, other than bumblebee? Does X fail to start? (if
so, please provide /var/log/Xorg.0.log)
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https://bugs.launchpad.net/bugs/1381175
No, this makes that the use of dedicated card useless and break the UX.
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https://bugs.launchpad.net/bugs/1381175
Title:
vgaarb module not patched
Status
I also confirmed that after upgrade to Vivid 15.04 beta 1 this also
happens.
Basically, this means that optimus is useless when the the nvidia card
is identified as 3D Controller instead of VGA compatible
controller.
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ubuntu-drivers-common (Ubuntu)
Status: New = Confirmed
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It looks like this bug is affecting me. Everything works fine, unless
machine goes into suspend mode, then it just hangs.
This are messages since machine was suspended:
[ 588.442408] vgaarb: this pci device is not a vga device
[ 588.667341] wlan0: deauthenticating from
** Description changed:
Basically, vga cannot detect NVIDIA cards as VGA compatible
controller, this is tested on a Optimus System.
- dmesg indicates thatit not a valid vga device:
+ dmesg indicates that it's not a valid vga device:
:~$ dmesg | grep vgaar
[0.202410] vgaarb:
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