[Bug 93826] 144Hz graphic glitches and bad resolution

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Bug ID 93826
Summary 144Hz graphic glitches and bad resolution
Product DRI
Version XOrg git
Hardware x86-64 (AMD64)
OS Linux (All)
Status NEW
Severity normal
Priority medium
Component DRM/Radeon
Assignee dri-devel@lists.freedesktop.org
Reporter dherault@hotmail.com

Created attachment 121218 [details]
290X Bad 144Hz

OS : Arch linux
GPU : Sapphire R9 290X

Other GPU to test : Sapphire 7950.
Screen : Asus MG279Q 1440p 144Hz.

DRI provides false frequency refresh the screen with R9 290X.
No issues with 7950.

With 7950 Xrandr is set @143.86Hz. 144 Hz on screen OSD :
http://reho.st/self/81f168d18def02417d2bd22867bc728658ec63e4.jpg

With 290X Xrandr is also set @143.86Hz. 139 Hz on screen OSD :
http://reho.st/self/b98c1c955cb7d42c3af6f82ea71bbc94be8aee6a.jpg

With 290X a lot of glitches with false 144Hz. The erroneous résolution cause
glitches.

- Lines on the left (from grub to kde...)
http://reho.st/view/self/ddfb4104cbbb09b7654b5fa610806d2477850128.jpg
http://reho.st/thumb/self/d3be18d9d93500f7395edbf58407f066500e980a.jpg

- Blur on all screen
- Text glitches
http://reho.st/thumb/self/b8fcd4246964f02c400e131bb54e0e8d2aa5101d.jpg

Thanks

Damien


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