| Summary: | Heavy black flickering with Intel graphics after VT switching to Mir from X | ||||||||
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| Product: | DRI | Reporter: | William Hua <william> | ||||||
| Component: | DRM/Intel | Assignee: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||||
| Status: | CLOSED WONTFIX | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||||
| Severity: | normal | ||||||||
| Priority: | medium | CC: | fraph24, iain, intel-gfx-bugs | ||||||
| Version: | unspecified | ||||||||
| Hardware: | x86-64 (AMD64) | ||||||||
| OS: | Linux (All) | ||||||||
| See Also: | https://launchpad.net/bugs/1409133 | ||||||||
| Whiteboard: | |||||||||
| i915 platform: | ILK | i915 features: | display/Other | ||||||
| Attachments: |
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Description
William Hua
2015-02-03 13:34:06 UTC
Please attach a drm.debug=0xf dmesg from across the VT switch. Something like: In X, "echo 0xf > /sys/module/drm/parameters/debug ; sleep 10; echo 0 > /sys/module/drm/parameters/debug" VT switch to Mir wait 10 second to capture the flicker VT switch to X dmesg && attach Created attachment 113111 [details]
DRM debug log
Probably a duplicate of bug 90508. Could you give the patch referenced there a try? Created attachment 116362 [details] dmesg.txt (In reply to Ander Conselvan de Oliveira from comment #3) > Probably a duplicate of bug 90508. Could you give the patch referenced there > a try? Bug #90508 is fixed in kernel-4.0.4-301. I'm using kernel-4.0.4-303 and I still got that issue. Fedora 22 Workstation, x86_64. After VT switch to X, I got this: [ 5427.787710] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun Francesco, please open a separate bug report and include dmesg with drm.debug=0xe from boot to the point where you get the FIFO underrun. (In reply to Ander Conselvan de Oliveira from comment #5) > Francesco, please open a separate bug report and include dmesg with > drm.debug=0xe from boot to the point where you get the FIFO underrun. Done. Here's the link (in the case they could be related somehow): https://bugs.freedesktop.org/show_bug.cgi?id=90896 Please try kernel v4.4. Very old, still valid issue? Due to the lack of response this bug will be closed, if the problem still occurs please open a new bug with updated logs, make sure the latest kernel is been used as well. |
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