Bug 43127 - driver video-ati 6.14.99 and xserver 1.11.99.1: no lightdm login screen (only a black screen)
Summary: driver video-ati 6.14.99 and xserver 1.11.99.1: no lightdm login screen (onl...
Status: RESOLVED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Server/Input/Core (show other bugs)
Version: git
Hardware: x86-64 (AMD64) Linux (All)
: medium major
Assignee: Xorg Project Team
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-11-20 21:04 UTC by Jos van Wolput
Modified: 2011-12-21 20:57 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
Xorg.0.log, no login screen (39.63 KB, patch)
2011-11-20 21:04 UTC, Jos van Wolput 		no flags Details | Splinter Review
lightdm.log (6.12 KB, text/plain)
2011-11-22 23:44 UTC, Jos van Wolput 		no flags Details
xsession-errors (26.29 KB, application/octet-stream)
2011-11-22 23:47 UTC, Jos van Wolput 		no flags Details
xsession-errors (26.29 KB, text/plain)
2011-11-23 00:08 UTC, Jos van Wolput 		no flags Details
lightdm-greeter.log (21.38 KB, text/plain)
2011-12-09 07:33 UTC, Jos van Wolput 		no flags Details
View All

Description Jos van Wolput 2011-11-20 21:04:33 UTC 
Created attachment 53731 [details] [review]
Xorg.0.log, no login screen

When using xserver git version (or v.1.11.99.1) with lightdm I don't get the login screen, only a black screen. Using autologin the X session is started,
though some apps freeze the screen.
No such issue using xserver v.1.11.2.
Comment 1 Jos van Wolput 2011-11-20 22:21:24 UTC 
This issue occurs using xf86-video-ati git version 6.14.99
Comment 2 Alex Deucher 2011-11-21 06:27:30 UTC 
Is this a regression?  If so, what was the last working version?  Did you also update your kernel and/or mesa?
Comment 3 Jos van Wolput 2011-11-21 23:57:26 UTC 
(In reply to comment #2)
> Is this a regression?  If so, what was the last working version?  Did you also
> update your kernel and/or mesa?

It doesn't seem to be a problem of xf86-video-ati, rather a regression of xserver
since the issue only depends on the version of xserver and not on that of xf86-video-ati.

I did bisect xserver, using the latest git version of xf86-video-ati.

The latest working version is xserver-57cd32..., 2011-10-03, xfree86/modes: Make cursor position transform a helper function, Aaron Plattner.
The bug seems to be in 	xserver-f5d50b4..., 2011-10-03, Merge remote-tracking branch 'whot/next', Keith Packard.

I am using Linux 3.1.0-1.dmz.2-liquorix-amd64 and git versions of drm, libX11, mesa, xserver, xf86-video-ati and xf86-input evdev, all of which I regularly update!
Comment 4 Alex Deucher 2011-11-22 06:48:55 UTC 
Did you rebuild xf86-video-ati against your new xserver?
Comment 5 Jos van Wolput 2011-11-22 07:06:30 UTC 
(In reply to comment #4)
> Did you rebuild xf86-video-ati against your new xserver?

Sure I did! After make distclean.
The last thing I tomorrow try is make distclean and rebuild everyting,
unless you have another suggestion.
Comment 6 Alex Deucher 2011-11-22 07:36:02 UTC 
(In reply to comment #5)
> Sure I did! After make distclean.
> The last thing I tomorrow try is make distclean and rebuild everyting,
> unless you have another suggestion.

Can you finish the xserver bisect?
Comment 7 Jos van Wolput 2011-11-22 23:44:49 UTC 
Created attachment 53790 [details]
lightdm.log
Comment 8 Jos van Wolput 2011-11-22 23:47:33 UTC 
Created attachment 53791 [details]
xsession-errors
Comment 9 Jos van Wolput 2011-11-23 00:02:35 UTC 
(In reply to comment #6)
> Can you finish the xserver bisect?

I am sorry I don't understand what you mean! Maybe using gdb?
I didn't use gdb to find the xserver where this issue starts happening.
I don't know how to debug xserver with gdb.

Please have a look at the attached lightdm.log which I get using xserver-f5d50b4... (and any of the followings)
lightdm-gtk-greeter gets terminated with signal 6 and the xsever gets signal 15.

Recompiling the git versions of drm, libX11, mesa, xserver, xf86-video-ati and xf86-input evdev didn't solve this issue.

The version of lightdm I am using is 1.0.6-2 from Debian Sid but the same issue
also occurs with previous versions.
Comment 10 Jos van Wolput 2011-11-23 00:08:21 UTC 
Created attachment 53792 [details]
xsession-errors
Comment 11 Jos van Wolput 2011-11-23 00:37:34 UTC 
This issue also occurs when using driver r600g instead of ati in xorg.conf
Comment 12 Alex Deucher 2011-11-23 06:46:42 UTC 
(In reply to comment #9)
> (In reply to comment #6)
> > Can you finish the xserver bisect?
> 
> I am sorry I don't understand what you mean! Maybe using gdb?

Sorry, it wasn't clear to me from comment 3 whether you actually ran a full git bisect or if you were just guessing that f5d50b4 was the problem.
Comment 13 Jos van Wolput 2011-11-23 17:12:39 UTC 
(In reply to comment #12)
>
> Sorry, it wasn't clear to me from comment 3 whether you actually ran a full git
> bisect or if you were just guessing that f5d50b4 was the problem.

To make things clear: I did a full git bisect, not just guessing.
It looks like merging "remote-tracking branch 'whot/next'" wasn't a good idea!
Comment 14 Jos van Wolput 2011-12-08 03:35:38 UTC 
I tried kdm 4.7.2-1 from debian.
This issue doesn't occur with kdm login.
Comment 15 Jos van Wolput 2011-12-09 04:38:23 UTC 
gdm3 (v.3.0.4-4) shows the same issue (black screen),
The notification-daemon (v. 0.7.3-1) doesn't work.
No such problems when using xserver versions prior to f5d50b4
Comment 16 Alex Deucher 2011-12-09 06:04:38 UTC 
Maybe Peter has some ideas.
Comment 17 Jos van Wolput 2011-12-09 07:33:04 UTC 
Created attachment 54275 [details]
lightdm-greeter.log

This is the lightdm greeter.log when getting a black screen.
Comment 18 Jos van Wolput 2011-12-09 07:40:23 UTC 
The notification-daemon shows a similar error in the xsession-errors:

*** glibc detected *** /usr/lib/notification-daemon/notification-daemon: malloc(): memory corruption: 0x0000000000779540 ***
======= Backtrace: =========
Comment 19 Michel Dänzer 2011-12-15 10:31:41 UTC 
I ran into a similar issue and was able to work around it using a Git snapshot of libXi. Apparently the new xserver code is doing something the released libXi can't deal with.
Comment 20 Peter Hutterer 2011-12-15 13:53:55 UTC 
I've just released libXi 1.4.4 with the two patches that most likely triggered this. Please update and try again, thanks.
Comment 21 Jos van Wolput 2011-12-15 18:48:26 UTC 
(In reply to comment #20)
> I've just released libXi 1.4.4 with the two patches that most likely triggered
> this. Please update and try again, thanks.

libXi 1.4.4 fixes this issue. Thanks!
The bug can be closed.
Comment 22 Jos van Wolput 2011-12-16 03:01:38 UTC 
I reopen this bug because libXi 1.4.4 doesn't seem to fix all issues:
I still get a frozen screen when trying to run a 3D wine app 'dream aquarium'
using xserver-f5d50b4 or any newer git version.
No frozen screen when using xserver-57cd32 or any previous version.
Comment 23 Jos van Wolput 2011-12-21 20:57:20 UTC 
Concerning the issue with 3D wine apps, I filed a new bug (44038) since this seems to be another problem.

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