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Message-Id: <8u3s94$gak45q@orsmga002.jf.intel.com> Date: Tue, 24 Aug 2010 00:55:54 +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 17:46:41 -0600, Jonathan Corbet <corbet@....net> wrote: > On Tue, 24 Aug 2010 00:37:52 +0100 > Chris Wilson <chris@...is-wilson.co.uk> wrote: > > > drm.debug=0x4 should print the right information for this bug. > > That doesn't seem to give me any output at all. > > One thing I noticed, though, is that I occasionally get something like: > > Aug 23 17:43:14 bike kernel: [ 142.920185] [drm:intel_calculate_wm] *ERROR* Insufficient FIFO for plane, expect flickering: entries required = 51, available = 28. > > They seem to come in threes, for whatever that's worth. In threes. Hmm, one for primary, cursor and self-refresh. drm.debug=0xe would be interesting to see what the pixel clock is. Can you grab one before the bad commit and one after? If there is a change that may help pin-point the mistake. Or indicate further problems... -- 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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