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http://bugs.xfree86.org/show_bug.cgi?id=314
------- Additional Comments From [EMAIL PROTECTED] 2003-11-11 03:40 -------
I'm having the same problem some other people are reporting here, where the
Radeon DRM tries to 'share' an IRQ with another device (in my case IRQ9, which
is also taken by usb-ohci). After a while of 3D work my USB mouse completely
stops responding, but 3D acceleration still works ok (PS/2 mouse as well).
This is on an IGP320M /w patches 540 & 541, XFree-4.3.99.9.
Changing to __HAVE_SHARED_IRQ 0 in radeon.h solves the problem for me.
I'm using 2.6.0-test3-bk1 here (went back from 2.6.0-test9 because of the same
problem, it should probably work with test9 right now). I don't remember
having any problems with the patch on 2.4.x or 2.5.x kernels.
This is my /proc/interrupts (after disabling shared IRQ's). The weird thing is
that the radeon DRM always wants IRQ9, as opposed to IRQ11 as reported by
others (never had any problems with networking while using 3D):
CPU0
0: 1217537 XT-PIC timer
1: 3262 XT-PIC i8042
2: 0 XT-PIC cascade
5: 818 XT-PIC ALI 5451
8: 2 XT-PIC rtc
9: 19162 XT-PIC acpi, ohci-hcd
11: 3985 XT-PIC eth0
12: 14204 XT-PIC i8042
14: 12230 XT-PIC ide0
15: 6 XT-PIC ide1
NMI: 0
ERR: 0
XFree says:
(II) RADEON(0): [drm] failure adding irq handler, there is a device already
using that irq
[drm] falling back to irq-free operation
(II) RADEON(0): [drm] Initialized kernel agp heap manager, 5111808
(II) RADEON(0): Direct rendering enabled
What effect does it have running without IRQ's, what is wrong with IRQ
sharing, and why (???) does the radeon module not just grab IRQ10 for example
(I think it takes IRQ10 in Windows).
Wouter Bijlsma
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