Bug 97783

Summary: TearFree fails in dual card configuration
Product: DRI Reporter: denisgolovan
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium    
Version: XOrg git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
xorg.conf
none
Xorg.0.log
none
dmesg none

Description denisgolovan 2016-09-13 08:55:36 UTC 
Hi

I am trying to use radeon driver git (38797a33117222dadbc89e5f21ed8cd5deef9bea) together with 2 radeon cards under Linux 64bit.

# uname -a
Linux denis-devuan 4.6.0-0.bpo.1-amd64 #1 SMP Debian 4.6.4-1~bpo8+1 (2016-08-11) x86_64 GNU/Linux

# lspci | grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Venus LE [Radeon HD 8830M] (rev 87)
04:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Venus LE [Radeon HD 8830M] (rev 87)

It works until I try to rotate one of outputs.
$ xrandr --setprovideroutputsource 1 0
$ xrandr --output DisplayPort-1-1 --auto
$ xrandr --output DisplayPort-1-1 --rotate left --left-of DisplayPort-0

Right after attempt to rotate rotated output hangs. The other one still works though.
Comment 1 denisgolovan 2016-09-13 08:58:12 UTC 
Rotation without TearFree works, but tearing of large displays (2560x1440) is scary.
Comment 2 denisgolovan 2016-09-13 08:59:48 UTC 
Created attachment 126474 [details]
xorg.conf
Comment 3 denisgolovan 2016-09-13 09:01:22 UTC 
Created attachment 126475 [details]
Xorg.0.log
Comment 4 denisgolovan 2016-09-13 09:02:01 UTC 
Created attachment 126476 [details]
dmesg
Comment 5 Michel Dänzer 2016-09-13 09:13:59 UTC 
Does

xrandr --output DisplayPort-1-1 --auto --rotate left --left-of DisplayPort-0

as a single command work?
Comment 6 denisgolovan 2016-09-13 09:52:06 UTC 
Yes, single line command works, but with some quirks.

Rotated display seems like lacks redraw(damage? not sure how to call them) events in its bottom half. Does it has something to do with height of right display? 
Mouse cursor leaves trails, moving windows leaves their contents on desktop, etc.

I mean my display configuration is:
+----------+---------------+
|          |               |
|    1     |     3         |
|          |               |
|----------|---------------|
|          |
|    2     |
|          |
+----------+

1,2 - halves on rotated display and 3 - horizontal monitor.
1 and 3 - redraw ok, 2 - does not.

Hope it'll help.
Comment 7 Michel Dänzer 2016-09-27 09:46:50 UTC 
The missing redraws should be fixed with current xf86-video-ati Git master. Can you still reproduce the original problem with that?
Comment 8 denisgolovan 2016-09-27 10:05:08 UTC 
Works perfectly now.
Thanks a lot!

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