http://bugzilla.kernel.org/show_bug.cgi?id=12356
Summary: [i915 drm] irq 16: nobody cared with 2.6.28 kernel
Product: Drivers
Version: 2.5
KernelVersion: 2.6.28
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI)
AssignedTo: drivers_video-...@kernel-bugs.osdl.org
ReportedBy: p...@gentoo.org
Latest working kernel version: unknown since this is new PC
Distribution: Gentoo
Hardware Environment: ThinkPad X61 Tablet 7762-CTO
Software Environment: Gentoo Linux
Problem Description:
This problem already was reported in number of places:
https://bugs.freedesktop.org/show_bug.cgi?id=18609
http://bugzilla.kernel.org/show_bug.cgi?id=12161
http://lkml.org/lkml/2008/12/2/115
http://marc.info/?l=linux-kernel&m=122822444615724&w=4
Although first two links state that this bug is fixes, I've checked and commit
that should report this problem is applied in 2.6.28 but bug is still there.
The problem is that sometimes (yea, probably high system loads increase
probability) I see the following in the kernel:
Jan 3 18:45:56 tablet irq 16: nobody cared (try booting with the "irqpoll"
option)
Jan 3 18:45:56 tablet Pid: 4587, comm: cc1plus Not tainted
2.6.28-gentoo-noswap #1
Jan 3 18:45:56 tablet Call Trace:
Jan 3 18:45:56 tablet <IRQ> [<ffffffff802559b8>] __report_bad_irq+0x30/0x7d
Jan 3 18:45:56 tablet [<ffffffff80255b0a>] note_interrupt+0x105/0x16b
Jan 3 18:45:56 tablet [<ffffffff8025618e>] handle_fasteoi_irq+0xa6/0xcf
Jan 3 18:45:56 tablet [<ffffffff8020dcb0>] do_IRQ+0x75/0xe5
Jan 3 18:45:56 tablet [<ffffffff8020b866>] ret_from_intr+0x0/0xa
Jan 3 18:45:56 tablet <EOI> <3>handlers:
Jan 3 18:45:56 tablet [<ffffffff80440d68>] (ahci_interrupt+0x0/0x45c)
Jan 3 18:45:56 tablet [<ffffffff803e3672>] (i915_driver_irq_handler+0x0/0x1e2)
Jan 3 18:45:56 tablet Disabling IRQ #16
After that my system became very slow and unusable.
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