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Date: Tue, 24 Aug 2010 00:37:52 +0100 From: Chris Wilson <chris@...is-wilson.co.uk> To: Jonathan Corbet <corbet@....net> Cc: LKML <linux-kernel@...r.kernel.org>, dri-devel@...ts.freedesktop.org, Eric Anholt <eric@...olt.net> Subject: Re: [now bisected] i915: 2.6.36-rc2 hoses my Intel display On Mon, 23 Aug 2010 17:32:25 -0600, Jonathan Corbet <corbet@....net> wrote: > On Mon, 23 Aug 2010 23:36:55 +0100 > Chris Wilson <chris@...is-wilson.co.uk> wrote: > > > Taking the patch at face value, the cause should be a mistake in error > > handling. So the first step would be to identify which i2c_transfer() > > failed. > > OK, I tried it, but neither warning triggers. Sigh, that sounds like I screwed the patch up instead. Thanks. > Don't know if it helps or not, but I tried booting with > drm.debug=0x05. The result was truly vast amounts of stuff like this: > > Aug 23 17:20:59 bike kernel: m:drm_ioctl], pid=2032, cmd=0x6458 > nm:drm_ioctl], pid=2032, cmd=0x6458, nm:drm_ioctl], pid=2032, cmd=0x645 [snip] > > The above is one line from the system log; I took the liberty of wrapping > it for readability. Hmm, probably bailing out of the ioctl before hitting the newline. drm.debug=0x4 should print the right information for this bug. -- Chris Wilson, Intel Open Source Technology Centre -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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