Re: [PATCH] drm/i915/sdvo: Reorder i2c initialisation before ddcproxy
From: Mihai Moldovan
Date: Wed May 18 2011 - 12:08:43 EST
* On 18.05.2011 04:40 PM, Keith Packard wrote:
I've marked this as reviewed, added your additional explanation and
merged it to drm-intel-next. Seems like it might like a cc to stable?
At the very least it works for me.
So far those special conditions seem to be rare, as the only other
reference I found was this bug report against the Ubuntu kernel:
(I'm using vanilla, besides the Reiser4 patch.)
I guess it'll hit more i915 users once distros ship 3.6.37 and up.
As a side note, I'm also seeing those GMBUS and MTRR allocation
failures, although I think that's pretty harmless.
Cleaned up kernel log ring buffer output:
I admit that I have no idea what GMBUS is and how critical it is, any
information on this? It seems to be linked to I2C as well, so I suspect
yet another hidden bug (though so far with no manifestation).
MTRR allocation may also fail due to BIOS settings, given a similar
report on http://intellinuxgraphics.org/user.html (Gigabyte GA-965G-DS3
board). I've got an Intel DQ45CB board (w/ Intel ICH10 chipset), but Fan
control is set to automatic, too. Sounds familiar and may explain this
issue. I'll give it a try tomorrow and see whether I still have
allocation failures or they are gone when switching the fan control mode.
Description: S/MIME Cryptographic Signature