Bug 100741
| Summary: | The DRM interfaces show status "unknown" after suspend/resume | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Julien Wajsberg (felash) |
| Component: | Video(DRI - Intel) | Assignee: | intel-gfx-bugs (intel-gfx-bugs) |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | intel-gfx-bugs |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 4.1 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
*** This bug has been marked as a duplicate of bug 100641 *** |
Hi developers, Sometimes I can't suspend my computer. My computer is a Lenovo Thinkpad Yoga (first one). I'm running kernel 4.1 on a Debian stable (8.1). Here is the issue: after suspend/resuming once, systemd thinks 4 displays are connected to my computer: output of journalctl -b -u systemd-logind: juil. 01 08:12:22 beitou systemd-logind[22720]: Lid closed. juil. 01 08:12:22 beitou systemd-logind[22720]: Ignoring lid switch request, 4 displays connected. juil. 01 08:12:22 beitou systemd-logind[22720]: Ignoring lid switch request, 4 displays connected. juil. 01 08:12:28 beitou systemd-logind[22720]: Lid opened. Note that I can suspend correctly once. Systemd thinkgs there are 4 displays because /sys expose bad status for these connectors: $ for i in /sys/class/drm/*/*/status ; do echo $i ; done /sys/class/drm/card0/card0-DP-1/status /sys/class/drm/card0/card0-eDP-1/status /sys/class/drm/card0/card0-HDMI-A-1/status /sys/class/drm/card0/card0-HDMI-A-2/status $ cat /sys/class/drm/*/*/status unknown unknown unknown unknown But if I run xrandr once, everything works again: $ xrandr Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 276mm x 156mm 1920x1080 60.04*+ 59.93 1680x1050 59.95 59.88 1600x1024 60.17 1400x1050 59.98 1280x1024 60.02 1440x900 59.89 1280x960 60.00 1360x768 59.80 59.96 1152x864 60.00 1024x768 60.00 800x600 60.32 56.25 640x480 59.94 DP1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) HDMI2 disconnected (normal left inverted right x axis y axis) $ cat /sys/class/drm/*/*/status disconnected connected disconnected disconnected I think this happens since I flashed latest BIOS from Lenovo. But I'm not sure, the suspend is quite flaky since I moved to 4.1 (from 3.14), but I know I have other issues with the XHC driver being enabled in /proc/acpi/wakeup (currently manually disabled), so I'm not sure for real the issue comes from the BIOS update. I'm more than happy to do more tests.