Bug 15738

Summary: VGA output of Radeon HD3450 displays too bright colors with KMS radeon driver
Product: Drivers Reporter: Benjamin Scherrer (realhangman)
Component: Video(DRI - non Intel)Assignee: drivers_video-dri
Status: RESOLVED CODE_FIX    
Severity: normal CC: akpm, alan, alexdeucher
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.33.1 and 2.6.33.2 Subsystem:
Regression: Yes Bisected commit-id:
Attachments: fix atom parser bug

Description Benjamin Scherrer 2010-04-09 14:35:21 UTC 
Hi,

2.6.33 is working fine for my amd64 Debian testing system with a dual-screen setup (Radeon HD3450 with VGA and DVI outputs). I compiled this kernel with the new KMS radeon driver and with the appropriate firmware.

However, if I compile 2.6.33.1 and 2.6.33.2 (with oldconfig from 2.6.33), the VGA output of my videocard displays everything much too bright, right from the start of the booting process and also after starting the X server.
The DVI output works fine.

I'm sorry that I can't give more information, I'd be glad to test things out if you tell me what to try. I searched the internet over and over again, but no one seems to have the same problem.

Best
Benjamin Scherrer
Comment 1 Alex Deucher 2010-04-09 18:42:38 UTC 
Created attachment 25932 [details]
fix atom parser bug

This patch fixes the issue.
Comment 2 Andrew Morton 2010-04-12 19:51:36 UTC 
Alex, please add

Cc: <stable@kernel.org>

to the changelog so that the -stable guys will reliably merge the patch.
Comment 3 Alex Deucher 2010-04-12 20:13:40 UTC 
I've already queued the patch with the stable cc via Dave's drm git tree.