Ubuntu
fglrx-installer package

cannot switch users if 3 or more users are logged in

Bug #879092 reported by Nicolas Avrutin on 2011-10-20

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	fglrx-installer (Ubuntu)	New	Undecided	Unassigned

Bug Description

When three (or presumably more) users (local or LDAP) are logged in, locking the screen and pressing the "Switch User" button on the unlock screen dialog causes the screen to flash several times (similar to what occurs when changing monitor resolution), then going blank. Moving the mouse or pressing keys causes the switch user dialog to come up again for the same user, making it impossible to switch users. This is consistently reproducible. Sometimes, instead of dropping back to the switch user dialog, it drops to a blank screen with a blinking cursor, or a blank screen with the message "mountall: Disconnnected from Plymouth".

We tried updating one workstation to Oneiric. The issue was still present, except it would always drop down to the blank screen, instead of giving you the same switch user dialog. This would suggest that it tries to switch to the next tty to start a new X session but is unable to start the new X session.

We have 12 workstations with ATI cards (model is in the lspci output) and 6 with Nvidia cards using the same image. This issue only occurs on (all) the workstations with the ATI cards, not the ones with Nvidia cards.

Downloading the driver from ATI's website and installing it manually made no difference.

fglrxinfo output is below. Other logs should be attached automatically.

fglrxinfo output:
display: :0.0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 3450
OpenGL version string: 3.3.10665 Compatibility Profile Context

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xorg 1:7.6+4ubuntu3.1
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
Date: Thu Oct 20 16:29:45 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
fglrx, 8.840, 2.6.38-11-generic, x86_64: installed
blcr, 0.8.2: added
virtualbox, 4.0.10, 2.6.38-11-generic, x86_64: installed
GraphicsCard:
ATI Technologies Inc RV620 LE [Radeon HD 3450] [1002:95c5] (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:9018]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
JockeyStatus: xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
MachineType: Dell Inc. Vostro 220 Series
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-11-generic root=UUID=48026894-7a91-441c-a0be-179295760266 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/17/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.1.4
dmi.board.name: 0P301D
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.1.4:bd04/17/2009:svnDellInc.:pnVostro220Series:pvr:rvnDellInc.:rn0P301D:rvrA01:cvnDellInc.:ct3:cvr:
dmi.product.name: Vostro 220 Series
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

Tags:

Revision history for this message

Nicolas Avrutin (nicolasavru) wrote on 2011-10-20:

Dependencies.txt Edit (5.6 KiB, text/plain; charset="utf-8")
GconfCompiz.txt Edit (36.4 KiB, text/plain; charset="utf-8")
GdmLog.txt Edit (43.8 KiB, text/plain; charset="utf-8")
GdmLog1.txt Edit (57.3 KiB, text/plain; charset="utf-8")
GdmLog2.txt Edit (47.0 KiB, text/plain; charset="utf-8")
GlConf.txt Edit (1.5 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (12.0 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (630 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (1.5 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (2.2 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (97.5 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (220.8 KiB, text/plain; charset="utf-8")
UnitySupportTest.txt Edit (605 bytes, text/plain; charset="utf-8")
XorgConf.txt Edit (1.3 KiB, text/plain; charset="utf-8")
XorgLog.txt Edit (59.2 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (75.7 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (13.0 KiB, text/plain; charset="utf-8")
locale.txt Edit (335 bytes, text/plain; charset="utf-8")
make.log.txt Edit (21.1 KiB, text/plain; charset="utf-8")
monitors.xml.txt Edit (1018 bytes, text/plain; charset="utf-8")
peripherals.txt Edit (2.5 KiB, text/plain; charset="utf-8")
setxkbmap.txt Edit (233 bytes, text/plain; charset="utf-8")
xdpyinfo.txt Edit (21.4 KiB, text/plain; charset="utf-8")
xinput.txt Edit (603 bytes, text/plain; charset="utf-8")

bugbot (bugbot) on 2011-10-21

affects:

xorg (Ubuntu) → fglrx-installer (Ubuntu)

Revision history for this message

Robert Sander (gurubert) wrote on 2012-02-24:

Could be related to bug #939858

Could you please have a look at /var/log/Xorg.*.log and look for lines starting with (EE) fglrx?

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Ubuntufglrx-installer package