Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: ubuntu-drivers-common (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1299002
Title:
gpu-manager xorg.conf inconsistency with AMD Catalyst (fglrx)
Status in ubuntu-drivers-common package in Ubuntu:
Confirmed
Bug description:
This is a bug report against gpu-manager.c in ubuntu-drivers-common.
~/Documents/VC/ubu/ubuntu-drivers-common/share/hybrid$ bzr log
------------------------------------------------------------
revno: 56
tags: 1:0.2.91.1
author: Alberto Milone
committer: Package Import Robot
branch nick: trusty-proposed
timestamp: Fri 2014-03-21 20:03:20 +0100
I'm submitting this now manually due to urgency to 14.04 release as
ubuntu-bug crashes too ;(
%sudo aticonfig --adapter=all --initial writes a xorg.conf which uses
xorg.conf keywords in "text" fields searched by function
static int check_vendor_bus_id_xorg_conf(struct device **devices, int
cards_n,
unsigned int vendor_id, char *driver)
In line 1072 of gpu-manager.c
"Driver" keyword is found from following lines xorg.conf written by aticonfig
Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection
Section "Monitor"
Identifier "aticonfig-Monitor[1]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection
Line 1119 of gpu-manager.c
else if ((istrstr(line, "Driver") != NULL) &&
(strstr(line, driver) == NULL)) {
failure = 1;
}
Looks the xorg keyword "Driver" anywhere in the line and finds "ATI
Proprietary Driver", but of course does not find correct drivername "fglrx"
from the same line => Keywords should be searched from the beginning of the
line, not all over.
Second issue in same function the format "PCI:%d@%d:%d:%d" which is
different to format "PCI:%d:%d:%d" used by aticonfig, which causes
misdetection of correct BusID in xorg.conf
If routine "check_vendor_bus_id_xorg_conf()" reports "Check failed"
completely valid xorg.conf is overwritten by gpu-manager.c in boot.
Quick workaround for users is to correct the xorg.conf after installation of
ATI Catalyst proprietary drivers taking these into account.
---
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CurrentDesktop: KDE
DistroRelease: Ubuntu 14.04
InstallationDate: Installed on 2014-03-27 (1 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140227)
NonfreeKernelModules: wl fglrx
Package: ubuntu-drivers-common 1:0.2.91.1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 3.13.0-19.40-generic 3.13.6
Tags: trusty
Uname: Linux 3.13.0-19-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
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