On Sat, May 21, 2011 at 10:45:24PM +0100, Chris Wilson wrote: > On Sun, 22 May 2011 00:08:10 +0300, Dmitry Nezhevenko <d...@inhex.net> wrote: > > Hi, > > > > I'm not sure why I'm getting this. I've performed a lot of configuration > > changes, so can't be sure, which one causes. I've switched to amd64 > > distro and upgraded everything to latest debian unstable. Also I'm on > > 2.6.39 now. > > > > I'm getting such hang sometimes just after unplugging HDMI cable from > > laptop. > > Hmm. Are you absolutely sure? I've an open bug 35576, but nothing that > indicated a correlation with modeswitching. The hang would appear to be > due to waiting on a dead pipe then. We've had a long history with such > bugs and purposely changing modes and so are now careful to flush any > pending waits from userspace and in KMS before modeswitching. This raises > the question that maybe there is a window for a hotplug event to turn-off > the pipe before userspace has finished flushing its queue of pending ops.
I've just tried to reproduce it again. It looks like I'm unable to do it when external display (DVI connected via DMI->HDMI cable) is turned off via xrandr. However if display is active (LVDS turned off and HDMI1 active) it was easy enough to reproduce this by just playing with HDMI connector. So after 5-6 attempts to plug/unplug monitor I've got hung again: [38440.632948] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 81 [38440.632956] [drm:drm_edid_block_valid] *ERROR* Raw EDID: [38440.632962] <3>00 ff ff ff ff ff ff 00 38 a3 8c 67 01 01 01 01 ........8..g.... [38440.632968] <3>07 14 01 03 80 34 20 78 ea fc 85 a4 55 4d 9d 25 .....4 x....UM.% [38440.632973] <3>12 50 54 bf ef 80 81 c0 81 80 90 40 8b c0 95 00 .PT........@.... [38440.632978] <3>a9 40 b3 00 d1 00 28 3c 80 a0 70 b0 23 40 30 20 .@....(<..p.#@0 [38440.632982] <3>36 00 06 44 21 00 00 1a 00 00 00 fd 00 32 55 1f 6..D!........2U. [38440.632987] <3>5c 11 00 0a 20 20 20 20 20 20 00 00 00 fc 00 4c \... .....L [38440.632992] <3>43 44 32 34 39 30 57 55 58 69 32 0a 00 00 00 ff CD2490WUXi2..... [38440.632997] <3>00 30 32 33 30 32 34 37 31 55 4f ff ff ff ff ff .02302471UO..... [38440.633000] [38461.596072] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung [38461.596083] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state [38461.597995] [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 2888267 at 2888261, next 2888268) [38462.100045] [drm:i915_reset] *ERROR* Failed to reset chip. > The important question is do you see this 0x01820000 at other times? > -Chris You are asking about "IPEHR:" line in i915_error_state file, right? Now it was IPEHR: 0x01800002. I've uploaded full file to: http://dion.org.ua/uploads/2011/05/2.6.39_intel_hung_2.txt As about other hungs, some times ago there were hungs while playing video using mplayer -vo xv. I've asked about it here and you replied that it's fixed in commit: commit 23f9b14df7c102c1036134835dd5d1a508059858 Author: Chris Wilson <ch...@chris-wilson.co.uk> Date: Sat Feb 12 10:42:34 2011 +0000 i965: Remove broken maximum base addresses from video So after upgrading to proper debian package everything was OK. At least currently I don't remember any hung except display plug/unplug -- WBR, Dmitry _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
