Hi,
I'm seeing tons of these error messages with current Linus' git:
[ 95.941618] [drm:intel_calculate_wm] *ERROR* Insufficient FIFO for plane, expect flickering: entries required = 36, available = 31.
Contrary to the error message, I don't see any flickering. I've attached my dmesg and config.
Pekka
On niedziela, 22 sierpnia 2010 o 17:26:19 Pekka Enberg wrote:
Hi,
I'm seeing tons of these error messages with current Linus' git:
[ 95.941618] [drm:intel_calculate_wm] *ERROR* Insufficient FIFO for plane, expect flickering: entries required = 36, available = 31.
Contrary to the error message, I don't see any flickering. I've attached my dmesg and config.
Pekka
See: https://bugzilla.kernel.org/show_bug.cgi?id=17021
Regards
On Thu, Aug 26, 2010 at 9:27 PM, Maciej Rutecki maciej.rutecki@gmail.com wrote:
On niedziela, 22 sierpnia 2010 o 17:26:19 Pekka Enberg wrote:
Hi,
I'm seeing tons of these error messages with current Linus' git:
[ 95.941618] [drm:intel_calculate_wm] *ERROR* Insufficient FIFO for plane, expect flickering: entries required = 36, available = 31.
Contrary to the error message, I don't see any flickering. I've attached my dmesg and config.
The "insufficient FIFO for plane" problem seems to have gone away with latest Linus' git. I suppose commit 9559fcdbff4f93d29af04478bbc48294519424f5 ("drm/i915: fix vblank wait test condition") fixed it although I don't see any mention of the error in the changelog?
Pekka
On Sun, Aug 29, 2010 at 02:32:41PM +0300, Pekka Enberg wrote:
The "insufficient FIFO for plane" problem seems to have gone away with latest Linus' git. I suppose commit 9559fcdbff4f93d29af04478bbc48294519424f5 ("drm/i915: fix vblank wait test condition") fixed it although I don't see any mention of the error in the changelog?
I found that commit reduced the number of "insufficient FIFO for plane" messages in certain circumstances too (when the system is stable I only see one at boot). However when my system is in "unstable mode" (see http://marc.info/?l=linux-kernel&m=128272404206696&w=2 ), I can still generate that message using the modetest (at the console) or xrandr (in X) tools or by doing VT switches. When this is the case, the message generally arrives in batches of two.
dri-devel@lists.freedesktop.org
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Maciej Rutecki -
Pekka Enberg -
Sitsofe Wheeler