PROBLEM: i915 regression between 2.6.39-rc6 and 2.6.39-rc7
Try booting the latest kernel with "i915.semaphores=1" and it should be fixed, at least for my SNB hardware. When I had it auto-bisected it came down to this commit 087fbc9962e10a65fb0b542ecfc116ebf6cf1735 that disabled semaphores. -- Michael Larabel On 05/17/2011 07:06 AM, Eric Leblond wrote: > Hello, > > When running the 2.6.39-rc7, I've observed a problem on my laptop (DELL > XPS15) which uses the i915 driver. Frequently, when moving the mouse > over, the cursor does only trigger the modification on the desktop after > a few seconds (like icons > highligthing). When this occurs, the following message appear in the > kernel log at the moment when the waited action occurs: > > [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring > idle [waiting on 905, at 905], missed IRQ? > > Switching back to 2.6.39-rc6 fixes the issue. > > It runs gnome 3 which uses glx to add some effect. Maybe this is linked. > When using the simple twm window manager, the problem does not seem to > occur. > > Keywords: drm, i915 > Kernel version: Linux version 2.6.39-rc7+ (eric at tiger) (gcc version 4.6.1 > 20110507 (prerelease) (Debian 4.6.0-7) ) #3 SMP Sun May 15 11:31:14 CEST 2011 > Processor: Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz > > Kernel log for i915: > May 17 13:30:36 tiger kernel: [ 15.458754] i915 :00:02.0: PCI INT A -> > GSI 16 (level, low) -> IRQ 16 > May 17 13:30:36 tiger kernel: [ 15.458760] i915 :00:02.0: setting > latency timer to 64 > May 17 13:30:36 tiger kernel: [ 15.513847] i915 :00:02.0: irq 52 for > MSI/MSI-X > May 17 13:30:36 tiger kernel: [ 16.011208] [drm] Initialized i915 1.6.0 > 20080730 for :00:02.0 on minor 0 > May 17 13:31:12 tiger kernel: [ 59.343937] [drm:i915_hangcheck_ring_idle] > *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 905, at 905], > missed IRQ? > May 17 13:31:17 tiger kernel: [ 63.998439] [drm:i915_hangcheck_ring_idle] > *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 947, at 947], > missed IRQ? > May 17 13:32:27 tiger kernel: [ 134.591975] [drm:i915_hangcheck_ring_idle] > *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 49015, at > 49015], missed IRQ? > May 17 13:32:29 tiger kernel: [ 136.127493] [drm:i915_hangcheck_ring_idle] > *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 49154, at > 49154], missed IRQ? > > lspci - for i915: > 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core > Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA > controller]) > Subsystem: Dell Device 04b6 > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- > Stepping- SERR- FastB2B- DisINTx+ > Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- > DEVSEL=fast>TAbort-<TAbort-SERR- Latency: 0 > Interrupt: pin A routed to IRQ 52 > Region 0: Memory at f140 (64-bit, non-prefetchable) [size=4M] > Region 2: Memory at e000 (64-bit, prefetchable) [size=256M] > Region 4: I/O ports at 4000 [size=64] > Expansion ROM at [disabled] > Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- > Address: fee0300c Data: 41c9 > 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 > > lspci: > 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family > DRAM Controller (rev 09) > 00:01.0 PCI bridge: Intel Corporation 2nd Generation Core Processor Family > PCI Express Root Port (rev 09) > 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core > Processor Family Integrated Graphics Controller (rev 09) > 00:16.0 Communication controller: Intel Corporation 6 Series Chipset Family > MEI Controller #1 (rev 04) > 00:1a.0 USB Controller: Intel Corporation 6 Series Chipset Family USB > Enhanced Host Controller #2 (rev 05) > 00:1b.0 Audio device: Intel Corporation 6 Series Chipset Family High > Definition Audio Controller (rev 05) > 00:1c.0 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express > Root Port 1 (rev b5) > 00:1c.1 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express > Root Port 2 (rev b5) > 00:1c.3 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express > Root Port 4 (rev b5) > 00:1c.4 PCI bridge: Intel Co
Re: PROBLEM: i915 regression between 2.6.39-rc6 and 2.6.39-rc7
Try booting the latest kernel with i915.semaphores=1 and it should be fixed, at least for my SNB hardware. When I had it auto-bisected it came down to this commit 087fbc9962e10a65fb0b542ecfc116ebf6cf1735 that disabled semaphores. -- Michael Larabel On 05/17/2011 07:06 AM, Eric Leblond wrote: Hello, When running the 2.6.39-rc7, I've observed a problem on my laptop (DELL XPS15) which uses the i915 driver. Frequently, when moving the mouse over, the cursor does only trigger the modification on the desktop after a few seconds (like icons highligthing). When this occurs, the following message appear in the kernel log at the moment when the waited action occurs: [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 905, at 905], missed IRQ? Switching back to 2.6.39-rc6 fixes the issue. It runs gnome 3 which uses glx to add some effect. Maybe this is linked. When using the simple twm window manager, the problem does not seem to occur. Keywords: drm, i915 Kernel version: Linux version 2.6.39-rc7+ (eric@tiger) (gcc version 4.6.1 20110507 (prerelease) (Debian 4.6.0-7) ) #3 SMP Sun May 15 11:31:14 CEST 2011 Processor: Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz Kernel log for i915: May 17 13:30:36 tiger kernel: [ 15.458754] i915 :00:02.0: PCI INT A - GSI 16 (level, low) - IRQ 16 May 17 13:30:36 tiger kernel: [ 15.458760] i915 :00:02.0: setting latency timer to 64 May 17 13:30:36 tiger kernel: [ 15.513847] i915 :00:02.0: irq 52 for MSI/MSI-X May 17 13:30:36 tiger kernel: [ 16.011208] [drm] Initialized i915 1.6.0 20080730 for :00:02.0 on minor 0 May 17 13:31:12 tiger kernel: [ 59.343937] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 905, at 905], missed IRQ? May 17 13:31:17 tiger kernel: [ 63.998439] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 947, at 947], missed IRQ? May 17 13:32:27 tiger kernel: [ 134.591975] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 49015, at 49015], missed IRQ? May 17 13:32:29 tiger kernel: [ 136.127493] [drm:i915_hangcheck_ring_idle] *ERROR* Hangcheck timer elapsed... blt ring idle [waiting on 49154, at 49154], missed IRQ? lspci - for i915: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device 04b6 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fastTAbort-TAbort-MAbort-SERR-PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 52 Region 0: Memory at f140 (64-bit, non-prefetchable) [size=4M] Region 2: Memory at e000 (64-bit, prefetchable) [size=256M] Region 4: I/O ports at 4000 [size=64] Expansion ROM atunassigned [disabled] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Address: fee0300c Data: 41c9 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 lspci: 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:01.0 PCI bridge: Intel Corporation 2nd Generation Core Processor Family PCI Express Root Port (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) 00:1b.0 Audio device: Intel Corporation 6 Series Chipset Family High Definition Audio Controller (rev 05) 00:1c.0 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 1 (rev b5) 00:1c.1 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 2 (rev b5) 00:1c.3 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 4 (rev b5) 00:1c.4 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 5 (rev b5) 00:1c.5 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 6 (rev b5) 00:1d.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) 00:1f.0 ISA bridge: Intel Corporation HM67 Express Chipset Family LPC Controller (rev 05) 00:1f.2 SATA controller: Intel Corporation 6 Series Chipset Family 6 port SATA AHCI