| Summary: | xf86-video-ati-6.13.2 scrambles 2560x1600 dual link DVI video on Radeon HD 4670 | ||||||||
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| Product: | xorg | Reporter: | Adam J. Richter <adam_richter2004> | ||||||
| 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 | ||||||||
| Version: | unspecified | ||||||||
| Hardware: | x86 (IA32) | ||||||||
| OS: | Linux (All) | ||||||||
| Whiteboard: | |||||||||
| i915 platform: | i915 features: | ||||||||
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Description
Adam J. Richter
2010-10-07 11:42:25 UTC
I hasten to add that my configuration is dual screen with DVI-0 attached to a 1920x1200 monitor and DVI-1 attached to the 2560x1600 monitor. I should also mention that I tried booting with radeon.new_pll=0 on the command line as mentioned in bug 27470, and this did not fix the problem with xf86-video-ati-6.13.2. Can you attach your xorg logs for both UMS and KMS and your dmesg for KMS? Also, what kernel are you using? Created attachment 39261 [details]
Kernel mode setting xf86-video-ati log
The computer I observed this problem on runs a 64-bit ("amd64") 2.6.36-rc7 kernel with 32-bit ("x86") user space. I have posted a log for kernel mode setting. The user mode setting log will follow shortly.
(In reply to comment #4) > Created an attachment (id=39261) [details] > Kernel mode setting xf86-video-ati log You aren't actually using KMS here, the driver still ends up loading in UMS mode even though you have the drm loaded in KMS mode: [ 14.823] (EE) RADEON(0): [dri] RADEONDRIGetVersion failed because of a version mismatch. [dri] This chipset requires a kernel module version of 1.17.0, [dri] but the kernel reports a version of 2.6.0.[dri] If using legacy modesetting, upgrade your kernel. [dri] If using kernel modesetting, make sure your module is [dri] loaded prior to starting X, and that this driver was built [dri] with support for KMS. [dri] Disabling DRI. make sure your ddx was built with KMS support and that the drm is loaded before starting X. Created attachment 39269 [details]
Xorg xf86-video-ati-6.13.2 user mode setting 2560x1600 scrambling Xorg.0.log file
Here is a log of the X server with xf86-video-ati-6.13.2 + user mode setting scrambling the output when the video mode is set to 2560x1600. The server initially drives the 2560x1600 monitor at 1920x1200, which produces good video. Then doing something like "xrandr --output DVI-1 --mode 2560x1600" results in a the left half of the screen being completely scrambled and the right side being rather blurry, as if perhaps every other pixel had been transposed.
Also, thanks for the advice about getting the X server to work under KMS. I will look into it.
UMS should be fixed in: 74fd2b91477106a26a2d9fb4b11c885910996041 Awesome! I did a "git pull" and rebuilt. Dual link now displays properly with user mode setting (and the kernel mode setting is apparently my own problem and, in any case, not the subject of this bug report). I confirm the bug is fixed. Please feel free to close this bug as "fixed." Thank you, Alex, for your super prompt and efficient analysis and fixing of this problem. |
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