Bug 31681

Summary:

Evergreen: Xv image corruption when scaling to "fullscreen"

Product:

xorg

Reporter:

Nils Kneuper <crazy-ivanovic>

Component:

Driver/Radeon

Assignee:

xf86-video-ati maintainers <xorg-driver-ati>

Status:

RESOLVED FIXED

QA Contact:

Xorg Project Team <xorg-team>

Severity:

normal

Priority:

medium

CC:

bugs.xorg

Version:

git

Hardware:

x86-64 (AMD64)

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
photo of the display showing the issue	none
8s testvideo showing the issue	none
Xorg.0.log	none
dmesg output	none

Description Nils Kneuper 2010-11-17 06:45:56 UTC

Ever since switching my rv670 based HD3850 to a Cypress based HD5850 I do get some image corruption when scaling my self recorded (using mencoder and later on avidemux for removing ads) analog TV data to view it at fullscreen (eg scaling to video from 704x428 to 1920x1200, keeping the aspect ratio) I got some "wrong colored stripes" in the bottom third. I will try to attach a short part of a video that does show the issue in a rather extreme fashion. You will see several red/pink as well as some (not as visible) greenish stripes if you are able to reproduce it. I assume that it somehow has to do with upscaling the noise in the video...

In general this does *only* happen using Xv. When selecting OpenGL as output this does not happen. It makes no difference if I select r600c or r600g as mesa potion. This issue was not happening with RV670 either. The issue does occur with both, kaffeine (using the Xine backend) as well as smplayer.

My software stack:
(vanilla) kernel 2.6.36 (amd64)
libdrm / mesa / xf86-video-ati from git master
Xorg server 1.9.x (will attach Xorg.0.log!) as of "gentoo linux amd64 unstable"

My hardware:
HD6850 1024MB
Phenom II X6
4096MB ram

Comment 1 Nils Kneuper 2010-11-17 06:48:33 UTC

Created attachment 40334 [details]
photo of the display showing the issue

Comment 2 Nils Kneuper 2010-11-17 06:52:14 UTC

Created attachment 40335 [details]
8s testvideo showing the issue

Scaling this video to 1920x1200 fullscreen lets several stripes appear in the bottom third of the screen.

Comment 3 Nils Kneuper 2010-11-17 06:53:02 UTC

Created attachment 40336 [details]
Xorg.0.log

Comment 4 Nils Kneuper 2010-11-17 06:53:35 UTC

Created attachment 40337 [details]
dmesg output

Comment 5 Alex Deucher 2011-01-20 14:14:16 UTC

should be fixed by this commit:
http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/commit/?id=0a03f03a65aad925ba2d9c76b1d3356184607bf9
Please reopen if it's still an issue.

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