Bug 21233

Summary: [RS690] "Failed to map FB" on logout
Product: xorg Reporter: Malte S. Stretz <mss>
Component: Driver/radeonhdAssignee: Luc Verhaegen <lverhaegen>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: major    
Priority: medium CC: bugzi11.fdo.tormod, mat
Version: 7.4 (2008.09)   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
URL: https://bugs.launchpad.net/bugs/361098
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Proposed fix none

Description Malte S. Stretz 2009-04-16 11:21:22 UTC 
This was originally reported on launchpad as LP#361098 (see URL).  A lot more details/attachments are available there, especially the Xorg.0.log at
  http://launchpadlibrarian.net/25528023/Xorg.0.log

Original text (reproduced with 1.2.5 later):

When I logout, instead of being sent back to the logon screen, all I get is a black screen (and I have to re-start X via '/etc/init.d/kdm restart') because radeonhd bails out with the following error:
(WW) RADEONHD(0): xf86UnMapVidMem: cannot find region for [0x7fa3da595000,0x10000000]
 (II) Open ACPI successful (/var/run/acpid.socket)
 (II) APM registered successfully
 (II) RADEONHD(0): Mapped IO @ 0xfdde0000 to 0x7fa3eec7f000 (size 0x00010000)
 (II) RADEONHD(0): IPG sideport memory not present.
 (==) RADEONHD(0): Mapping IGP memory @ 0x70000000
 (EE) RADEONHD(0): Failed to map FB.
Fatal server error:
 AddScreen/ScreenInit failed for driver 0
Please consult the The X.Org Foundation support
          at http://wiki.x.org
  for help.
 Please also check the log file at "/var/log/Xorg.0.log" for additional information.
 ddxSigGiveUp: Closing log
ProblemType: Bug
 Architecture: amd64
 DistroRelease: Ubuntu 9.04
 Package: xserver-xorg-video-radeonhd 1.2.4-2
 ProcEnviron:
  LANGUAGE=
  LANG=en_US.UTF-8
  SHELL=/bin/bash
 ProcVersion: Linux version 2.6.28-11-generic (buildd@crested) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #41-Ubuntu SMP Wed Apr 8 04:39:23 UTC 2009
 SourcePackage: xserver-xorg-video-radeonhd
 Uname: Linux 2.6.28-11-generic x86_64
Comment 1 Matthias Hopf 2009-04-17 06:30:58 UTC 
Created attachment 24892 [details] [review]
Proposed fix

Can you try this patch? I'm a bit unsure about this code path, so I'd like to have it tested before applying the patch.
Comment 2 Malte S. Stretz 2009-04-17 06:41:24 UTC 
Tormod, can you create a package for me with that patch included so I can test it? :) Or give me a pointer on how to do it myself in no more than ten minutes? Thanks.
Comment 3 Malte S. Stretz 2009-04-19 05:26:35 UTC 
It seems like this fixes the bug for me :) (I used the packages Tormod rolled for me.)

This makes X a lot more usable again. But 1.2.5 introduced some new flickering/distortion on logon (compared to 1.2.4), hard to explain, see
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-radeonhd/+bug/361098/comments/3
But that is a different bug, this one seems to be fixed.
Comment 4 Matthias Hopf 2009-04-20 04:49:33 UTC 
Thanks for testing.
Pushed as 881334543d2711f159c8fcaf4a30b8b0db3186d7.

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