Bug 47277 - VT switching freezes windows
Summary: VT switching freezes windows
Status: RESOLVED INVALID
Alias: None
Product: xorg
Classification: Unclassified
Component: Server/General (show other bugs)
Version: git
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Xorg Project Team
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-03-13 06:27 UTC by Sébastien le Preste de Vauban
Modified: 2018-06-12 18:43 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:


Attachments
Xorg.0.log (44.99 KB, patch)
2012-03-13 06:27 UTC, Sébastien le Preste de Vauban
no flags Details | Splinter Review
dmesg.log (49.13 KB, text/plain)
2012-03-13 08:11 UTC, Sébastien le Preste de Vauban
no flags Details
new Xorg.0.log (58.30 KB, text/plain)
2012-03-13 08:13 UTC, Sébastien le Preste de Vauban
no flags Details
screenshot before the bug happens (462.44 KB, image/png)
2012-03-14 05:35 UTC, Sébastien le Preste de Vauban
no flags Details
Screenshot after the bug happens (223.42 KB, image/png)
2012-03-14 05:37 UTC, Sébastien le Preste de Vauban
no flags Details
X.Org X Server 1.12.99 log file (47.70 KB, text/plain)
2012-03-14 16:59 UTC, Sébastien le Preste de Vauban
no flags Details
new dmesg (50.61 KB, text/plain)
2012-03-14 17:00 UTC, Sébastien le Preste de Vauban
no flags Details
screenshot before the bug happens with xorg server 1.12.99 (276.39 KB, image/png)
2012-03-14 17:02 UTC, Sébastien le Preste de Vauban
no flags Details
Screenshot after the bug happens with xorg server 1.12.99 (74.35 KB, image/png)
2012-03-14 17:03 UTC, Sébastien le Preste de Vauban
no flags Details

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Description Sébastien le Preste de Vauban 2012-03-13 06:27:39 UTC
Created attachment 58370 [details] [review]
Xorg.0.log

I am running archlinux with the following setup:

-3.2.9-1-ARCH
-X.Org X Server 1.12.0 Release Date: 2012-03-04
-[    92.210] (II)         Composite (RENDER acceleration)
 [    92.211] (II) Initializing built-in extension COMPOSITE
-02:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RV710 [Radeon HD 4350]
-AMD Athlon(tm) 64 Processor 3200
-[    2.162616] [drm] radeon kernel modesetting enabled
[    2.164537] [drm] initializing kernel modesetting (RV710 0x1002:0x954F 0x1682:0x2461).
-Openbox 3.5.0


The problem occurs when you switch to a VT while having a window open (a terminal or a browser, etc), login, and run htop for example and then you return to X. You will see all your windows have got black (and unusable).
Comment 1 Alex Deucher 2012-03-13 06:36:19 UTC
Please attach your dmesg output.
Comment 2 Sébastien le Preste de Vauban 2012-03-13 08:11:28 UTC
Created attachment 58378 [details]
dmesg.log

dmesg generated after the bug occurred.
Comment 3 Sébastien le Preste de Vauban 2012-03-13 08:13:06 UTC
Created attachment 58379 [details]
new Xorg.0.log

Xorg.0.log generated after the bug occured.
Comment 4 Sébastien le Preste de Vauban 2012-03-13 08:17:33 UTC
BTW, I don't use gdm or other login manager, just startx. Also, I use no desktop environment, just Openbox.  I also had this same issue with a ATI Radeon 9600 PRO in another computer.
Comment 5 Michel Dänzer 2012-03-14 03:25:59 UTC
> -X.Org X Server 1.12.0 Release Date: 2012-03-04

According to the log file, the xf86-video-ati version is 6.14.3. However, that version doesn't work with xserver 1.12. Presumably it was patched by Arch. Does the problem also occur with current upstream xf86-video-ati Git?


> You will see all your windows have got black (and unusable).

Can you attach a screenshot showing the problem? Can you recover from the problem by forcing the window contents to be redrawn?
Comment 6 Sébastien le Preste de Vauban 2012-03-14 05:35:47 UTC
Created attachment 58431 [details]
screenshot before the bug happens
Comment 7 Sébastien le Preste de Vauban 2012-03-14 05:37:09 UTC
Created attachment 58432 [details]
Screenshot after the bug happens
Comment 8 Sébastien le Preste de Vauban 2012-03-14 05:39:54 UTC
(In reply to comment #5)
> > -X.Org X Server 1.12.0 Release Date: 2012-03-04
> 
> According to the log file, the xf86-video-ati version is 6.14.3. However, that
> version doesn't work with xserver 1.12. Presumably it was patched by Arch. Does
> the problem also occur with current upstream xf86-video-ati Git?
> 
> 
> > You will see all your windows have got black (and unusable).
> 
> Can you attach a screenshot showing the problem? Can you recover from the
> problem by forcing the window contents to be redrawn?

I attached two screenshots of the bug. Also, now I am using latest git from http://aur.archlinux.org/packages.php?ID=15374 (xf86-video-ati-git). So the problem still persist with current upstream xf86-video-ati Git.
Comment 9 Sébastien le Preste de Vauban 2012-03-14 05:44:46 UTC
> Can you recover from the problem by forcing the window contents to be redrawn?

How do I do that?
Comment 10 Michel Dänzer 2012-03-14 09:20:59 UTC
(In reply to comment #9)
> > Can you recover from the problem by forcing the window contents to be redrawn?
> 
> How do I do that?

E.g. by clicking on elements in the windows, or running xrefresh.


Anyway, I think this is rather an issue in the X server or elsewhere, as the driver wouldn't really know to distinguish between the window contents and background / decorations.
Comment 11 Sébastien le Preste de Vauban 2012-03-14 16:58:15 UTC
I just installed latest X.Org X Server 1.12.99 from git, from https://aur.archlinux.org/packages.php?ID=18963.
The problem persist.
I am attaching new Xorg log and dmesg, with screenshots.
Comment 12 Sébastien le Preste de Vauban 2012-03-14 16:59:44 UTC
Created attachment 58463 [details]
X.Org X Server 1.12.99 log file
Comment 13 Sébastien le Preste de Vauban 2012-03-14 17:00:47 UTC
Created attachment 58464 [details]
new dmesg
Comment 14 Sébastien le Preste de Vauban 2012-03-14 17:02:15 UTC
Created attachment 58465 [details]
screenshot before the bug happens  with xorg server 1.12.99
Comment 15 Sébastien le Preste de Vauban 2012-03-14 17:03:17 UTC
Created attachment 58466 [details]
Screenshot after the bug happens with xorg server 1.12.99
Comment 16 Sébastien le Preste de Vauban 2012-03-15 21:14:58 UTC
Is there any other info I can provide?
Comment 17 Mateusz Loskot 2012-06-10 13:29:18 UTC
I can confirm the problem can be reproduced with Xorg 1.12.2 installed from Arch packages (https://www.archlinux.org/packages/?name=xorg-server)

I posted detailed description to the arch-general how to reproduce the problem
(http://mailman.archlinux.org/pipermail/arch-general/2012-June/026960.html)

Pasted below for convenience:

===
I have been observing strange issues when I switch between X and TTY.
Here is the step-by-step story with details:

0. Login to tty1 and ttt2
1. From tty2 (not tty1), startx with either i3wm or Openbox
2. Launch 2-3 apps (e.g. urxvt, Firefox)

3. Switch back to tty1 (CTRL+ALT+F1)
4. Execute some shell commands in tty1
5. Switch back to X  (CTRL+ALT+F7)
6. Observe no problems, no hangs, in Openbox the ALT+TAB and
    in i3wm the Mod+[jkl;] combination cycles through windows, etc.

7. Switch to tty2 (CTRL+ALT+F2)
8. See xinit output, hit ENTER once or more, the xinit output scrolls up
9. Switch back to X  (CTRL+ALT+F7)
10. Now, observe strange  problems with lack of response in both,
Openbox or i3wm.

WMs are not completely frozen, but somewhat partially.
Neither Openbox ALT+TAB nor i3wm Mod+[jkl;] work.
No reaction to mouse operations have no effect
No reaction to i3wm Mod+SHIFT+Q, etc.

I'm running updated Arch on Lenovo ThinkPad T400
with Intel graphics (xf86-video-intel driver, i915 module).

Could the problem be related to xf86-video-intel driver?

BTW, I have been observing slow rendering of Terminus font under i3wm [1]
and it turns out the problem is in the most recent version of xf86-video-intel
in the Arch repos [2].

[1] http://infra.in.zekjur.net/archives/i3-discuss/2012-June/000699.html
[2] http://infra.in.zekjur.net/archives/i3-discuss/2012-June/000702.html
===
Comment 18 Adam Jackson 2018-06-12 18:43:26 UTC
Mass closure: This bug has been untouched for more than six years, and is not obviously still valid. Please file a new report if you continue to experience issues with a current server.


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