Public bug reported:
Well, this is really weird problem.
I had installed Kubuntu 16.04 from daily build about two weeks ago, using only
Intel VGA iGPU. Then day 2016-01-05 I installed an NVIDIA GT 430 card and
proprietary nvidia drivers "nvidia-352-updates" from the repositories (using
package manager). The nvidia driver and the system worked well.
The day 2016-01-09 while I was using the system, the screen started to do some
strange things and the system crashed/locked. By forcing a reboot I never was
able to start Kubunu with nvidia proprietary drivers. The screen goes black
with prompt flashing in the upper left corner, and I can not even enter a TTY
teminal using nvidia driver.
So what I do is to enter recovery mode and from command line I uninstall nvidia
driver. Restarting with "nouveau" the system also does not start the X display,
I get black screen (without the prompt flashing), but with "nouveau" I can
enter to a TTY terminal and with "startx" I can enter to the system in graphic
mode . Now with "nouveau" and starting with "startx" everything seems to work
fine, but I always get the black screen when startup the system, so I always
should start graphics mode with "startx".
In short, from the day 2016-01-09 using "nvidia" proprietary driver I can never
start Kubuntu in graphic mode and I can not even enter to a TTY teminal. With
"nouveau" I also get a black screen when start the system, but at least I can
enter a TTY and start graphical mode with "startx".
I am reporting for "nvidia-352-updates", but the problem still occurs with
nvidia 304, 340, 361 from PPA. I also Try Kernel 4.3.0-2, 4.3.0-5, 4.4.0
mainline.
Sorry for my English
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: nvidia-352-updates (not installed)
ProcVersionSignature: Ubuntu 4.3.0-2.11-generic 4.3.0
Uname: Linux 4.3.0-2-generic x86_64
ApportVersion: 2.19.3-0ubuntu3
Architecture: amd64
CurrentDesktop: KDE
Date: Wed Jan 13 19:57:30 2016
InstallationDate: Installed on 2015-12-25 (19 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151222)
SourcePackage: nvidia-graphics-drivers-352-updates
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.modprobe.d.nvidia.352.updates.hybrid.conf: [deleted]
** Affects: nvidia-graphics-drivers-352-updates (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1533889
Title:
Nvidia proprietary suddenly stopped working and then impossible to
start X again
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