Hi,
while watching flash video in a browser I got: irq 42: nobody cared (try booting with the "irqpoll" option) Pid: 0, comm: swapper Tainted: G W 2.6.39-rc3-mm1_64+ #1423 Call Trace: <IRQ> [<ffffffff810bd671>] __report_bad_irq+0x31/0xc0 [<ffffffff810bd934>] note_interrupt+0x194/0x1d0 [<ffffffff810bbb58>] handle_irq_event_percpu+0xe8/0x160 [<ffffffff810bbc05>] handle_irq_event+0x35/0x60 [<ffffffff810be1af>] handle_edge_irq+0x6f/0x110 [<ffffffff81033a4d>] handle_irq+0x1d/0x30 [<ffffffff810336c8>] do_IRQ+0x58/0xe0 [<ffffffff815f9753>] common_interrupt+0x13/0x13 <EOI> [<ffffffff81030850>] ? __switch_to+0x260/0x2c0 [<ffffffff8109a46e>] ? tick_nohz_stop_sched_tick+0x28e/0x3d0 [<ffffffff81039be4>] ? default_idle+0x24/0x40 [<ffffffff81030236>] cpu_idle+0x36/0xb0 [<ffffffff815e3108>] rest_init+0x68/0x70 [<ffffffff81a7fb6a>] start_kernel+0x35c/0x367 [<ffffffff81a7f322>] x86_64_start_reservations+0x132/0x136 [<ffffffff81a7f417>] x86_64_start_kernel+0xf1/0xf8 handlers: [<ffffffff8132ee60>] (i915_driver_irq_handler+0x0/0x420) Disabling IRQ #42
Now the interrupt is polled, so that the graphics is obviously sluggish.
I have also /sys/kernel/debug/dri contents if you want anything of that. Going to reboot now.
# lspci -vvnnxxxs 00:02.0 00:02.0 VGA compatible controller [0300]: Intel Corporation 82G33/G31 Express Integrated Graphics Controller [8086:29c2] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Intel Corporation 82G33/G31 Express Integrated Graphics Controller [8086:29c2] 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 42 Region 0: Memory at feb80000 (32-bit, non-prefetchable) [size=512K] Region 1: I/O ports at ec00 [size=8] Region 2: Memory at d0000000 (32-bit, prefetchable) [size=256M] Region 3: Memory at fea00000 (32-bit, non-prefetchable) [size=1M] Expansion ROM at <unassigned> [disabled] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Address: fee0300c Data: 4161 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- Kernel driver in use: i915 00: 86 80 c2 29 07 04 90 00 02 00 00 03 00 00 00 00 10: 00 00 b8 fe 01 ec 00 00 08 00 00 d0 00 00 a0 fe 20: 00 00 00 00 00 00 00 00 00 00 00 00 86 80 c2 29 30: 00 00 00 00 90 00 00 00 00 00 00 00 05 01 00 00 40: 09 00 0b 01 00 00 00 00 01 00 00 00 00 00 00 00 50: 00 00 30 02 c9 03 00 00 00 00 00 00 00 00 80 af 60: 00 00 02 02 00 00 00 00 00 00 00 00 00 00 00 00 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90: 05 d0 01 00 0c 30 e0 fe 61 41 00 00 00 00 00 00 a0: 11 11 00 00 00 00 06 03 00 00 00 00 00 00 00 00 b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 d0: 01 00 22 00 00 00 00 00 00 00 00 00 00 01 02 00 e0: 00 00 00 00 00 00 00 00 00 80 00 00 00 00 00 00 f0: 10 00 00 00 00 00 00 00 90 0f 03 00 e4 e0 5b af
regards,