Bug#235482: irq problem still exists(?)

[ZIEGLER Ga'bor <ziegler@alpha.tmit.bme.hu>]

Christian Guggenberger írta:

> > > Could you try to unload all usb/uhci/ehci modules (e.g. by
> > > /etc/init.d/hotplug stop) before starting X?
> > > maybe a newer kernel would help, there was some drm/dri merge somewhere
> > > in 2.4.23 or 2.4.24 ?
> > >      
Well, I have tried to stop hotplug, removed all usb related modules 
manually (even usbcore). 
I have even disabled the IRQ-assignment to USB in the BIOS, disabled 
ACPI IRQ routing  in the kernel (pci=noacpi boot option).

According to lspci -v the USB controller has not occupied any IRQ, still 
it still did not help on the IRQ problem.

XFree86 still sais:

> (II) MGA(0): [drm] failure adding irq handler, there is a device 
> already using t
> hat irq
> [drm] falling back to irq-free operation
> (==) MGA(0): Direct rendering enabled

I tried both the Matrox driver for 4.3.0 and the original mga_drv.o  
from your  xserver-xfree86_4.3.0-2.cg.1_i386.deb
package.

Gabor