*** This bug is a duplicate of bug 1768610 ***
https://bugs.launchpad.net/bugs/1768610
I have witnessed a _related_ issue but it does not appear to be
precisely the same problem.
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1853585
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*** This bug is a duplicate of bug 1768610 ***
https://bugs.launchpad.net/bugs/1768610
I had these exact same symptoms today with my nVidia GTX 960 after doing
a platform upgrade from 17.10 to 18.04.
Issue was actually dead simple to fix, the upgrade to 18.04 removed some
PPAs (including the
*** This bug is a duplicate of bug 1768610 ***
https://bugs.launchpad.net/bugs/1768610
** This bug has been marked a duplicate of bug 1768610
leftover conffile forces GNOME is software rendering
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** Description changed:
After upgrading from 16.04 to 18.04 on a very plain Intel Skylake
graphics, hardware acceleration is gone. Glxinfo and System Information
report 'llvmpipe' (software rasterizer)
It is caused by the file
/etc/X11/Xsession.d/50_check_unity_support
which can be
** This bug is no longer a duplicate of bug 1768610
leftover conffile forces GNOME is software rendering
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https://bugs.launchpad.net/bugs/1767468
Title:
*** This bug is a duplicate of bug 1768610 ***
https://bugs.launchpad.net/bugs/1768610
** This bug has been marked a duplicate of bug 1768610
leftover conffile forces GNOME is software rendering
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** Changed in: nux (Ubuntu)
Assignee: (unassigned) => Canonical Desktop Team (canonical-desktop-team)
** Changed in: nux (Ubuntu)
Milestone: None => ubuntu-18.04.1
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@Brian: just FYI, the /etc/X11/Xsession.d/50_check_unity_support file is
actually checking for ubuntu, not xubuntu: if [ "x$DESKTOP_SESSION" =
"xubuntu" ] will be true if $DESKTOP_SESSION is "ubuntu", because it's
prepending "x" to $DESKTOP_SESSION.
My unity_support_check was failing (it returns
echo $LIBGL_ALWAYS_SOFTWARE gives me 1. Why?
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https://bugs.launchpad.net/bugs/1767468
Title:
Upgrade from 16.04 to 18.04, then uninstalling unity disables
I have purged nux-tools (which removed the Xsession file), but I'm still
rendering on llvmpipe
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https://bugs.launchpad.net/bugs/1767468
Title:
Upgrade from
I'm using Ubuntu, not Xubuntu. I never tried to manually execute the
script. I simply removed the file and rebooted – problem gone.
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The mentioned file,/etc/X11/Xsession.d/50_check_unity_support, should
only run on systems using Xubuntu. Is that what everyone is using?
Additionally, I tried to recreate this by uninstalling unity but
unity_support_test still passes for me.
[ 1:24PM 10282 ] [
@Michele - Thanks, that did it for me. This problem has been driving me
nuts since I upgraded to 18.04.
I went one step further though. I noticed that file belonged to the nux-
tools package. I went ahead and ran "sudo apt purge nux-tools". I didn't
see a need to keep that package around anymore.
I had exactly the same issue. Commenting out the content of
/etc/X11/Xsession.d/50_check_unity_support works around the issue.
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I reproduced the bug with the following:
* 17.10 itself upgraded from 17.04
* uninstalled Unity (to workaround a bug but I don't remember which one)
* upgrade to 18.04 today
-> hardware acceleration disabled
lspci:
> 00:02.0 VGA compatible controller: Intel Corporation Device 5a85 (rev 0b)
The
I had to use a 4.16 kernel from http://kernel.ubuntu.com/~kernel-
ppa/mainline to have a working machine!
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https://bugs.launchpad.net/bugs/1767468
Title:
Maybe related to this other bug report:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1768232
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https://bugs.launchpad.net/bugs/1767468
Title:
Upgrade from
Also lshw reports VGA controller as *unclaimed*.
sudo lshw -c display
~
*-display UNCLAIMED
description: VGA compatible controller
product: 4th Gen Core Processor Integrated Graphics Controller
Does not solve the problem for me, still Intel VGA driver not loaded.
`lspci -v` returns :
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor
Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
Subsystem: Dell 4th Gen Core Processor Integrated
I'd like to confirm that I observed this same problem when upgrading
from 17.10 to 18.04. Removing /etc/X11/Xsession.d/50_check_unity_support
also fixed my installation.
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