Bug 52042

Summary: [snb] ASUS X55A requires CADL
Product: DRI Reporter: MuTian <sonic_mu>
Component: DRM/IntelAssignee: Daniel Vetter <daniel>
Status: CLOSED DUPLICATE QA Contact:
Severity: blocker    
Priority: medium CC: ben, chris, daniel, jbarnes, sonic_mu
Version: unspecified   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:

Description MuTian 2012-07-13 09:04:24 UTC 
The problem was caused by incorrect data reported by your Linux Gfx driver.
The data of CADL~CAL8 of the OpRegion Mailbox 1 is not updated to correct value.
Ubuntu kernel version: linux-image-3.2.0-26-generic ( https://launchpad.net/ubuntu/precise/amd64/linux-image/3.2.0.26.28);
IGD driver version: xserver-xorg-video-intel (2.17.0-1ubuntu4)  ( https://launchpad.net/ubuntu/+source/xserver-xorg-video-intel);
We also try the xserver-xorg-video-intel 2.19.0-1ubuntu2, the result is the same.
We can’t use the CADL-CAL8 of the OpRegion in the BIOS function Key ACPI Method. It’s return NULL.
Comment 1 Daniel Vetter 2012-08-22 10:34:31 UTC 
Missing CADL support is tracked in a separate bug.

*** This bug has been marked as a duplicate of bug 45452 ***

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