Public bug reported:
I ran "sudo apt-get upgrade" and after rebooting I started to have
problems with the display. Now it's black even from the boot options
screen (I mean before GRUB menu). I left the system go up end after
connecting via ssh I could see the following in dmesg:
[ 796.633789] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 797.133525] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(8).
[ 797.133531] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 797.633326] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(9).
[ 797.633331] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 798.133117] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule
IB(10).
[ 798.133122] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 798.632897] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule
IB(11).
[ 798.632903] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 799.132682] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule
IB(12).
[ 799.132687] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 799.632462] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule
IB(13).
[ 799.632467] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 800.132257] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule
IB(14).
[ 800.132263] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 800.632060] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule
IB(15).
[ 800.632065] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 801.131826] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(0).
[ 801.131832] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 801.631619] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(1).
[ 801.631624] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 802.131420] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(2).
[ 802.131426] [drm:radeon_cs_ioctl] *ERROR* Failed to schedule IB !
[ 802.631209] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(3).
$ uname -a
Linux ajax 3.2.0-124-generic #167-Ubuntu SMP Fri Mar 3 15:25:36 UTC 2017 x86_64
x86_64 x86_64 GNU/Linux
Any suggestion?
Thanks in advance,
Giuseppe
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-124.167-generic 3.2.79
Uname: Linux 3.2.0-124-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.15
Architecture: amd64
Date: Tue Mar 21 15:25:55 2017
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120423)
MarkForUpload: True
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise
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https://bugs.launchpad.net/bugs/1674704
Title:
blank screen after software update
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