Public bug reported:
I get a blank screen with only mouse pointer upon boot, after the splash. This
started after the mesa driver update on 2/15/18. The display does not appear
to switch to tty7 upon lightdm start.
Xorg.0.log quickly grows and continues to grow.
I believe `lightdm` is not starting `Xorg` on the correct display, but,
I don't know how to determine this from the logs.
Here is the command line `lightdm` uses to launch `Xorg`:
~$ ps -ef | grep lightdm
root 1261 1 0 18:23 ? 00:00:00 /usr/sbin/lightdm
root 1316 1261 6 18:23 tty7 00:00:03 /usr/lib/xorg/Xorg -core :0
-seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
root 1350 1261 0 18:23 ? 00:00:00 lightdm --session-child 12
15
*OCCURRENCE ON 2/15/18:*
I performed a normal upgrade on 2/15/18 through the software manager in
16.04LTS.
It upgraded the following libraries (`/var/log/dpkg.log [pkg][old
ver][new ver]`):
libegl1-mesa-dev:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libwayland-egl1-mesa:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-ubuntu0~16.04.1
libwayland-egl1-mesa:i386 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libegl1-mesa:i386 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libegl1-mesa:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libgbm1:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libgbm1:i386 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libosmesa6:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libosmesa6:i386 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libgles2-mesa:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libgl1-mesa-glx:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libgl1-mesa-glx:i386 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libglapi-mesa:i386 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libglapi-mesa:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libgl1-mesa-dri:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libgl1-mesa-dri:i386 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
libxatracker2:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
linux-firmware:all 1.157.15 1.157.16
mesa-vdpau-drivers:i386 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
mesa-vdpau-drivers:amd64 17.2.4-0ubuntu1~16.04.4 17.2.8-0ubuntu0~16.04.1
xserver-xorg-video-radeon-hwe-16.04:amd64 1:7.9.0-0ubuntu1~16.04.1
1:7.10.0-1~16.04.1
xserver-xorg-video-ati-hwe-16.04:amd64 1:7.9.0-0ubuntu1~16.04.1
1:7.10.0-1~16.04.1
I should note, this is *not* the compiz/unity update package list. It
is the mesa drivers.
Upon reboot, I started getting a blank screen with only a mouse pointer
when the display manager started.
I press <kbd>CTRL</kbd>+<kbd>ALT</kbd>+<kbd>F1</kbd> to go into console,
and I can find the following in the `Xorg.0.log`:
[ 4800.851] (WW) RADEON(0): flip queue failed: Invalid argument
[ 4800.851] (WW) RADEON(0): Page flip failed: Invalid argument
These warning messages are *constantly* streaming into the log file, and
it *keeps growing*. This wasn't present before the library update. I
will be happy to provide a logfile upon request.
Video h/w on my laptop:
*-display
description: VGA compatible controller
product: RV516/M64-S [Mobility Radeon X2300]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:01:00.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=radeon latency=0
resources: irq:16 memory:d0000000-d3ffffff ioport:4000(size=256)
memory:d8300000-d830ffff memory:c0000-dffff
1st lines of modinfo output:
filename:
/lib/modules/4.13.0-26-generic/kernel/drivers/gpu/drm/radeon/radeon.ko
license: GPL and additional rights
description: ATI Radeon
*UPDATE 2/16/18:*
I appear to be booting to the wrong VT display. All of the symptoms
above are true; however, if I perform a
<kbd>CTRL</kbd>+<kbd>ALT</kbd>+<kbd>F1</kbd> (up to <kbd>F6</kbd>) at
startup and then immediately perform a
<kbd>CTRL</kbd>+<kbd>ALT</kbd>+<kbd>F7</kbd>, which switches the VT, I
go to my normal desktop as if it had booted correctly.
<kbd>CTRL</kbd>+<kbd>ALT</kbd>+<kbd>F7</kbd> without first going to
console does not do anything. So, this simplifies things somewhat as it
now looks to be a config issue. Lightdm seems to start Xorg on the
wrong display. I tried a vt.handoff=7 on the linux kernel command line,
and this did not help.
Here is the output of `w` immediately after pressing
<kbd>CTRL</kbd>+<kbd>ALT</kbd>+<kbd>F7</kbd> and going to the normal
desktop:
09:38:01 up 44 min, 1 user, load average: 0.60, 0.67, 0.82
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
user1 tty7 :0 08:53 44:14 6:16 0.29s
/sbin/upstart -
This display listing appears normal.
I should note that compiz and unity still seem to function. The desktop
is fully available and already loaded when I switch to tty7.
*UPDATE 2/19/18:*
I don't believe this to be a duplicate of the compiz/unity issue. The
issue I observed resulted from the mesa driver update on the morning of
2/15/18. The compiz/unity update has yet to be applied to my system.
In fact, there is one other post that looks to be the same issue as I am
seeing, it is: https://askubuntu.com/questions/1006264/var-log-xorg-0
-log-file-growing-fast
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xserver-xorg-video-radeon-hwe-16.04 1:7.10.0-1~16.04.1
ProcVersionSignature: Ubuntu 4.13.0-26.29~16.04.2-generic 4.13.13
Uname: Linux 4.13.0-26-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Feb 19 10:22:52 2018
InstallationDate: Installed on 2017-04-05 (319 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64
(20170215.2)
ProcEnviron:
LANGUAGE=en_US
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: xserver-xorg-video-ati-hwe-16.04
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: xserver-xorg-video-ati-hwe-16.04 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
** Attachment added: "Xorg.0.log"
https://bugs.launchpad.net/bugs/1750393/+attachment/5058202/+files/Xorg.0.log
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https://bugs.launchpad.net/bugs/1750393
Title:
Blank screen with only mouse pointer after mesa driver update; display
does not switch to tty7 upon lightdm start; Xorg.0.log quickly grows
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