| Summary: | [HSW Regression]igt/kms_plane some subcases cause "[drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A" | ||||||
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| Product: | DRI | Reporter: | Guo Jinxian <jinxianx.guo> | ||||
| Component: | DRM/Intel | Assignee: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||
| Status: | CLOSED FIXED | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||
| Severity: | normal | ||||||
| Priority: | high | CC: | intel-gfx-bugs | ||||
| Version: | unspecified | ||||||
| Hardware: | Other | ||||||
| OS: | All | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
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Does the laptop have a 4k display? Does i915.enable_ips=0 help? Test passes on latest -nightly(43df30da20447e2856b2761215ff274886a9f931) [root@x-hsw24 tests]# ./kms_plane --run-subtest plane-position-covered-pipe-A-plane-1 IGT-Version: 1.8-g137877f (x86_64) (Linux: 3.17.0-rc4_drm-intel-nightly_43df30_20140914+ x86_64) Testing connector VGA-1 using pipe A plane 1 Subtest plane-position-covered-pipe-A-plane-1: SUCCESS (0.960s) [root@x-hsw24 tests]# echo $? 0 [root@x-hsw24 tests]# dmesg -r|egrep "<[1-4]>"|grep drm [root@x-hsw24 tests]# Closing verified+fixed |
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Created attachment 105373 [details] dmesg ==System Environment== -------------------------- Regression: Yes. Good commit on -next-queued: 3a5f87c286515c54ff5c52c3e64d0c522b7570c0 Non-working platforms: HSW ==kernel== -------------------------- origin/drm-intel-nightly: e91331cf71c509af3dfae75cd9bca3db13d7da95(fails) drm-intel-nightly: 2014y-08m-27d-21h-32m-10s integration manifest origin/drm-intel-next-queued: 661ccef518a23dd6b3aff11ca6eee9c71568f37a(works) drm/i915/bdw: BDW Software Turbo origin/drm-intel-fixes: 813008cd3e93ea8a571b2b7d5b9360a3105b50f7(fails) drm/i915: don't warn if backlight unexpectedly enabled ==Bug detailed description== igt/kms_plane some subcases cause "[drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A" Case list: igt/kms_plane/plane-position-covered-pipe-A-plane-1 igt/kms_plane/plane-position-covered-pipe-C-plane-1 Output: [root@x-hsw24 tests]# ./kms_plane --run-subtest plane-position-covered-pipe-A-plane-1 IGT-Version: 1.7-g50166d2 (x86_64) (Linux: 3.16.0_drm-intel-next-queued_661cce_20140828+ x86_64) Testing connector VGA-1 using pipe A plane 1 Subtest plane-position-covered-pipe-A-plane-1: SUCCESS [root@x-hsw24 tests]# dmesg -r|egrep ""<[1-4]>""|grep drm <3>[ 114.145642] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared fifo underrun on pipe A <3>[ 114.145643] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun <3>[ 114.145650] [drm:cpt_set_fifo_underrun_reporting] *ERROR* uncleared pch fifo underrun on pch transcoder A <3>[ 114.145650] [drm:cpt_serr_int_handler] *ERROR* PCH transcoder A FIFO underrun ==Reproduce steps== ---------------------------- 1. ./kms_plane --run-subtest plane-position-covered-pipe-A-plane-1