Environment: ------------ platform: HuronRiver kernel: 2.6.36-rc3 Bug detailed description: -------------------------- By a SDVO-TV, the bios and grub is displayed normally. While the kernel boot up, the screen turns to black. But we are able to login the machine using ssh. After running xinit we don't detect TV, by using tool xrandr. However, the 945gc machine works well with the same kernel.
Created attachment 38754 [details] dmesg info
The platform is G45 not Huron River. This is using S-video on ADD2 card. 945GC is with SDVO-TV integrated on board.
2.6.36-rc3 is known to be broken with SDVO and TV detection (timing and platform specific failures), can you confirm the bug on either -rc4 or -fixes?
we tried 2.6.36-rc4 and the latest version on branch fixes,but nothing different from before.
Can you please add drm.debug=0xe to your boot command line and attach a new dmesg?
This should be fixed with: commit d121a5d2a098ba6dd033dd195f5ccbf7558c37b6 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Tue Jan 25 15:00:01 2011 +0000 drm/i915/sdvo: If at first we don't succeed in reading the response, wait We were not pausing after detecting the response was pending and so did not allow the hardware sufficient time to complete before aborting. This lead to transient failures whilst probing SDVO devices. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=30235 Reported-by: Knut Petersen <Knut_Petersen@t-online.de> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Verified it, if any bug, we'll file another.
Closing old verified.
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