+intel-gfx On Tue, 19 May 2015, Rainer Koenig <Rainer.Koenig@xxxxxxxxxxxxxx> wrote: > Hi, > > I'm testing the vanilla kernel on prototype boards for Intel Skylake. > The graphics adapter on those boards identifies like this: > > 00:02.0 0300: 8086:1912 (rev 04) (prog-if 00 [VGA controller]) > Subsystem: 1734:121c > 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 123 > Region 0: Memory at d0000000 (64-bit, non-prefetchable) [size=16M] > Region 2: Memory at c0000000 (64-bit, prefetchable) [size=256M] > Region 4: I/O ports at f000 [size=64] > Expansion ROM at <unassigned> [disabled] > Capabilities: [40] Vendor Specific Information: Len=0c <?> > Capabilities: [70] Express (v2) Root Complex Integrated Endpoint, MSI 00 > DevCap: MaxPayload 128 bytes, PhantFunc 0 > ExtTag- RBE+ > DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported- > RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop- > MaxPayload 128 bytes, MaxReadReq 128 bytes > DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend- > DevCap2: Completion Timeout: Not Supported, TimeoutDis-, LTR-, OBFF > Not Supported > DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF > Disabled > Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit- > Address: fee00018 Data: 0000 > 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: [100 v1] #1b > Capabilities: [200 v1] Address Translation Service (ATS) > ATSCap: Invalidate Queue Depth: 00 > ATSCtl: Enable-, Smallest Translation Unit: 00 > Capabilities: [300 v1] #13 > Kernel driver in use: i915 > Kernel modules: i915 > > > I'm running both Fedora 21 and OpenSUSE 13.2 on those boards at the > moment, both with a self compiled Kernel 4.1-rc4 (latest git pull was > today). > > Problem: Whenever power management kicks in and blanks the screen the > systems behave very strange when trying to get the screen back. The > screen is not fully restored then, but when I move the mouse (Gnome 3 or > XFCE desktops) up and down the image rolls up and down like a curtain. I > see no mouse cursor anymore and can't resume to normal operation. > > When this happens I see the following line in dmesg: > > [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO > underrun > > Hardware is still the first prototypes for Skylake, BIOS is beta too. > But I wanted to give a note about that problem here, maybe someone has > an idea what is missing. For brand new platforms you should be running drm-intel-nightly branch from http://cgit.freedesktop.org/drm-intel. Double check that you have either i915.preliminary_hw_support=1 module parameter set or CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT=y config option set. BR, Jani. > > Regards > Rainer > -- > Dipl.-Inf. (FH) Rainer Koenig > Project Manager Linux Clients > Dept. PDG WPS R&D SW OSE > > Fujitsu Technology Solutions > Bürgermeister-Ullrich-Str. 100 > 86199 Augsburg > Germany > > Telephone: +49-821-804-3321 > Telefax: +49-821-804-2131 > Mail: mailto:Rainer.Koenig@xxxxxxxxxxxxxx > > Internet ts.fujtsu.com > Company Details ts.fujitsu.com/imprint.html > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > http://lists.freedesktop.org/mailman/listinfo/dri-devel -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
