Kenneth, please file a bug report on DRM/Intel at [1], with the below information, and attach dmesg from boot with drm.debug=0xe module parameter set. Please find a further question below inline. [1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI On Wed, 28 May 2014, "Kenneth R. Crudup" <kenny@xxxxxxxxx> wrote: > I tend to run the tip of Linus' master branch, and that's been working > well. After merging in "master" about 3 weeks ago though, I'd often come > back to a hard-hung laptop after being gone for 15-20 mins or so, i.e., > after the (blank-screen) screensaver had kicked in, but only when I'm > at the office and I had a higher-res monitor (2560x1440) plugged in. > > I started going thru the i915 commit logs and after ruling out stuff > that doesn't appear to apply to my laptop, I'd reverted: > > eeb6324d ("drm/i915: consider the source max DP lane count too") > and > 56071a20 ("drm/i915: use lane count and link rate from VBT as minimums for eDP") > > ... and when I'd come in this morning, my laptop was still up and came > up from the screen saver (it stays on when I'm away from it and not > suspended). Due to the sporadic nature of the hangs (not always > reproducible) and time constraints on my part, I haven't narrowed down > which commit seems to have broken things, but I hope this does help > you guys to perhaps have an "A-ha!" moment. > > My laptop's a Toshiba Satellite P75-A7200 with a Haswell CPU and fairly > standard i915 graphics: > > ---- > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 60 > model name : Intel(R) Core(TM) i7-4700MQ CPU @ 2.40GHz > stepping : 3 > microcode : 0x16 > cpu MHz : 886.500 > cache size : 6144 KB > physical id : 0 > siblings : 8 > core id : 0 > cpu cores : 4 > apicid : 0 > initial apicid : 0 > fpu : yes > fpu_exception : yes > cpuid level : 13 > wp : yes > ---- > 00:02.0 0300: 8086:0416 (rev 06) (prog-if 00 [VGA controller]) > Subsystem: 1179:fa72 > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ > Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- > Latency: 0 > Interrupt: pin A routed to IRQ 40 > Region 0: Memory at b2000000 (64-bit, non-prefetchable) [size=4M] > Region 2: Memory at a0000000 (64-bit, prefetchable) [size=256M] > Region 4: I/O ports at 5000 [size=64] > Expansion ROM at <unassigned> [disabled] > Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- > Address: feeff00c Data: 4181 > Capabilities: [d0] Power Management version 2 > Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) > Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- > Capabilities: [a4] PCI Advanced Features > AFCap: TP+ FLR+ > AFCtrl: FLR- > AFStatus: TP- > Kernel driver in use: i915 > ---- > eDP1 connected primary 1920x1080+0+360 (normal left inverted right x axis y axis) 381mm x 214mm > 1920x1080 60.5*+ 59.9 40.3 > ---- > HDMI1 connected 2560x1440+1920+0 (normal left inverted right x axis y axis) 597mm x 336mm > ... > 2560x1440_40 40.0* > ---- > > If you need any other information from me, please don't hesitate to ask. > > Thanks, > > -Kenny > > -- > Kenneth R. Crudup Sr. SW Engineer, Scott County Consulting, Los Angeles On Thu, 29 May 2014, "Kenneth R. Crudup" <kenny@xxxxxxxxx> wrote: > On Wed, 28 May 2014, Kenneth R. Crudup wrote: > >> [I'd get] back to a hard-hung laptop after being gone for 15-20 mins >> ... after the (blank-screen) screensaver had kicked in, but only when I'm >> at the office and I had a higher-res monitor (2560x1440) plugged in. > ... >> 56071a20 ("drm/i915: use lane count and link rate from VBT as minimums for eDP") > > It's apparently this commit; reverting it (which also pulls f4cdbc214 > ("drm/i915/dp: force eDP lane count to max available lanes on BDW") as > a side-effect, which doesn't matter on my non-Broadwell machine anyway) > seems to have stopped the panic-after-screen-off issue for me. You refer both to a hard hang and a panic, which one is it? What happens? Do you get a backtrace? Does the machine stop responding to ping? Can you ssh in and get dmesg? BR, Jani. > > HTH someone, > > -Kenny > > -- > Kenneth R. Crudup Sr. SW Engineer, Scott County Consulting, Los Angeles -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
