ubuntu-x-swat team mailing list archive

[Ryan Farmer <827120@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

AMD's proprietary Catalyst driver "FGLRX" uses the X server to set the
video mode. This behavior is incompatible with the open source radeon
kernel module with attempts to set the video mode using the kernel.

If a user installs Catalyst/FGLRX and kernel mode setting is not
disabled for Radeon with radeon.modeset=0 on the kernel line in GRUB,
then eventually the entire system will stop booting at the point where X
should be loading, and the monitor will suspend itself since nothing is
sending it a video signal. At this time, the system also stops
responding to the keyboard so ctrl-alt-del or other key combinations to
restart the system have no effect.

Since *buntu defaults to no GRUB countdown, it is very difficult to
catch it in order to change the kernel boot line to allow it to boot up
to where the user can change GRUB's settings. However, the user should
not ever reach this point because the FGLRX package should set
radeon.modeset=0 for them.

This does not appear to be happening as of now in *buntu Oneiric.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: fglrx 2:8.872-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-8.11-generic 3.0.1
Uname: Linux 3.0.0-8-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Tue Aug 16 01:15:26 2011
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: fglrx-installer
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: fglrx-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug oneiric

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which is subscribed to fglrx-installer in Ubuntu.
https://bugs.launchpad.net/bugs/827120

Title:
  FGLRX package does not disable radeon modesetting and prevents X from
  starting.

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