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SubjectDisabling IRQ #11 - uhci || e100 || r128-dri problem
In recent 2.6.12 prereleases a bug has appeared. Whenever I log out of 
KDE, IRQ 11 is disabled on X server restart (kdm restarts it). It always
results with the dmesg below and sometimes the new X loses keyboard
input (ps2 keyboard, usb mouse). USB mouse works well. X works (sans
keyboard sometimes). Network is dead.

irq 11: nobody cared!
[<c0136144>] __report_bad_irq+0x24/0x90
[<c0136241>] note_interrupt+0x61/0x90
[<c0135c1b>] __do_IRQ+0x13b/0x150
[<c0105607>] do_IRQ+0x47/0x70
=======================
[<c0103b2a>] common_interrupt+0x1a/0x20
[<c011dfce>] __do_softirq+0x2e/0x80
[<c0105711>] do_softirq+0x41/0x50
=======================
[<c011e0e5>] irq_exit+0x35/0x40
[<c010560e>] do_IRQ+0x4e/0x70
[<c0103b2a>] common_interrupt+0x1a/0x20
handlers:
[<e09622b0>] (usb_hcd_irq+0x0/0x60 [usbcore])
[<c02aabb0>] (e100_intr+0x0/0x150)

Disabling IRQ #11
Celeron 900, Intel ICH2 chipset with integrated UHCI and onboard e100
NIC, running Debian unstable with XFree 4.3. 2.6.12-rc2 + XFree of that
time was OK, didn't try rc3 and rc4, rc5 probably also not tested but
rc5+git snapshots are the broken ones (together with current XFree). ATI
rage128 graphics with DRI enabled; I get the following dmesg lines on
X server start and at least the agpgart lines on each X server restart
too. I have seen this bug some time earlier too, probably in 2.6.11
timeframe, or in early 2.6.12 timeframe.

[drm] Initialized r128 2.5.0 20030725 on minor 0: ATI Technologies Inc Rage 128 RF/SG AGP
agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
agpgart: Putting AGP V2 device at 0000:00:00.0 into 2x mode
agpgart: Putting AGP V2 device at 0000:02:00.0 into 2x mode

/proc/interrupts during normal work:
CPU0
0: 13006046 XT-PIC timer
1: 26607 XT-PIC i8042
2: 0 XT-PIC cascade
7: 1 XT-PIC parport0
8: 4 XT-PIC rtc
9: 1 XT-PIC acpi, Intel 82801BA-ICH2
10: 336628 XT-PIC uhci_hcd:usb2
11: 1161748 XT-PIC uhci_hcd:usb1, eth0, r128@PCI:2:0:0
14: 48258 XT-PIC ide0
15: 194377 XT-PIC ide1
NMI: 2680
LOC: 13007697
ERR: 0
MIS: 0


--
Meelis Roos (mroos@linux.ee)
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