| Summary: | Rendering glitches in tk applications with psr enabled on Thinkpad X1 Carbon 2nd gen (Haswell) | ||||||
|---|---|---|---|---|---|---|---|
| Product: | DRI | Reporter: | Benjamin Poirier <benjamin.poirier> | ||||
| Component: | DRM/Intel | Assignee: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||
| Status: | CLOSED INVALID | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||
| Severity: | normal | ||||||
| Priority: | medium | CC: | intel-gfx-bugs | ||||
| Version: | unspecified | ||||||
| Hardware: | Other | ||||||
| OS: | All | ||||||
| Whiteboard: | |||||||
| i915 platform: | HSW | i915 features: | display/PSR | ||||
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FYI, I also notice problems with Firefox, okular and pinentry. If I scroll using the keyboard or type some text, there is a noticeable delay before the window content is refreshed. As expected, moving the mouse continuously works around the issue. Moreover, this only happens on certain display outputs (ie. eDP1, HDMI1, HDMI2) but it is not consistent which one. I can also move the window from one display to another and then the problem is not apparent. Upon closer inspection, the second set of problems, described in comment 1, was a different problem, bug 96464. I can no longer reproduce the original issue with git gui/gitk. Beats me as to why since I could reproduce it consistently when bisecting. Closing. |
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Created attachment 124539 [details] dmesg with drm debug messages Since updating to 4.6 I noticed rendering glitches in tk applications. I bisected the issue to 9b58e35 drm/i915: Enable PSR by default on Haswell and Broadwell. (v4.6-rc1) One way to reproduce the issue is to run git gui blame --line=4132 v4.6 net/core/dev.c in a linux kernel git tree, Click on line 4132 Scroll up and down in the bottom window (the commit log) using the mouse wheel. Notice that blank lines are not properly refreshed and there is ghost content from what was there before scrolling. Moving the window fixes the render. If you don't have a mouse wheel available ATM, click on lines 4131 and 4132 in alternance and notice that the color highlighting in the column that has line numbers is not properly updated (if you move the window, it is updated). I noticed similar issues in gitk. I've further tested with 5fb50cc from drm-intel-nightly and the problem remains. i915.enable_psr=0 works around the issue i915.enable_psr=2 and =3 do not work around the issue root@f1:~# cat /sys/kernel/debug/dri/0/i915_edp_psr_status Sink_Support: no Source_OK: no Enabled: no Active: no Busy frontbuffer bits: 0x000 Re-enable work scheduled: no Main link in standby mode: no HW Enabled & Active bit: no Performance_Counter: 0 The platform is Lenovo ThinkPad X1 Carbon 2nd, model 20A7CTO1WW I can see the problem both on the laptop screen or with external monitors. I am running openbox on Xorg, distro is openSUSE Tumbleweed. I tried running kms_psr_sink_crc from intel-gpu-tools but it doesn't seem like it was able to complete: IGT-Version: 1.15-NOT-GIT (x86_64) (Linux: 4.6.0-1-default x86_64) Test requirement not met in function main, file kms_psr_sink_crc.c:522: Test requirement: !(!psr_possible(&data)) Last errno: 2, No such file or directory Subtest psr_basic: SKIP Subtest primary_page_flip: SKIP Subtest primary_mmap_gtt: SKIP Subtest primary_mmap_gtt_waiting: SKIP Subtest primary_mmap_cpu: SKIP Subtest primary_blt: SKIP Subtest primary_render: SKIP Subtest sprite_mmap_gtt: SKIP Subtest sprite_mmap_gtt_waiting: SKIP Subtest sprite_mmap_cpu: SKIP Subtest sprite_blt: SKIP Subtest sprite_render: SKIP Subtest sprite_plane_move: SKIP Subtest sprite_plane_onoff: SKIP Subtest cursor_mmap_gtt: SKIP Subtest cursor_mmap_gtt_waiting: SKIP Subtest cursor_mmap_cpu: SKIP Subtest cursor_blt: SKIP Subtest cursor_render: SKIP Subtest cursor_plane_move: SKIP Subtest cursor_plane_onoff: SKIP Subtest dpms_off_psr_active: SKIP Subtest dpms_off_psr_exit: SKIP Subtest suspend_psr_active: SKIP Subtest suspend_psr_exit: SKIP Please let me know if you need more info.