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Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).


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Old 01-14-2004, 11:56 PM   #1
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Distribution: Fedora 5, Solaris 10, true64bit unix
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change irq

HP pavilion ze4500, Fedora core, 2.6.1 kernel (for acpi), and patched XFree86., for acceleration ATI igp 340m. Everything works!!!! BUT when I startx with the new radeon module, it freezes so that I cant even ssh into it, to kill it. So after a lot of searching I discovered that USB is using IRQ 10, Modem is using IRQ 10, Ethernet card is using IRQ10, and video card is using IRQ 10, and if thats not enough, when DRI is enabled, it uses IRQ 10 and the system locks up. I disabled acpi, and pnp bios, to allow the os to determine IRQ's, and forced Raden no IRQ, disabled USB and made some progress, the screen flickered before it froze, with ANY windows manager. I will try Any suggestions from anyone, other than re-installing XP.
Old 01-16-2004, 01:58 AM   #2
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I'd be pointing the blame at your patched XFree86., what happenes with the old raedon module in XFree86-4.3.0?
ALso, this was in the readme for the latest ATi linux driver,
  Graphics Accelerators:
    ATI Radeon 8500, 9100, 9200, 9500, 9600, 9700, 9800, 
    ATI Mobility 9000, 9600
    ATI FireGL 8700, 8800, E1, E2, X1, X2, Z1, T2
    ATI Mobility FireGL T2
Anything there that helps?
Old 01-17-2004, 02:49 AM   #3
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Patching XFree is for the purpose of providing Acceleration for the card, reciently incorporated into the dri CVS. Even with the 4.3.0 kernel I had to patch it to enable acceleration. But again the same lock up, tried against the 2.4.20, 2.4.22 and 2.4.24 kernels also. Checking each version, the same problem, 5 different hardware items grabbing IRQ 10. It appears that most people who have installed this new module have been successful in getting acceleration to work on other laptops, but the ze4500 seems to have a problem.
Old 02-01-2004, 12:08 PM   #4
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I have an Amilo A with IGP 320M, but the same driver works for you. This laptop has IRQ-problems too. See
I tried XFree86. with dri and mesa-sources, it does not work (segfaults, 3D-apps dont start or grey screen). For me XFree86. with the patch under works. This is the direct link to the right patch:
If you have IRQ-conflicts first compile and install your XFree86-Sources, then change to:

edit radeon.h

change the line

#define __HAVE_SHARED_IRQ 1


#define __HAVE_SHARED_IRQ 0

Afterwards you have to compile the module against your kernel
Then copy the recompiled module (radeon.o) to

Edit your XF86Config (or however this file is named at your distribution)
Now X should start fine. If you have no 3D deinstall the mesa-packages from your distribution and reinstall X-sources.
export RADEON_NO_IRQS=1 in /etc/profile had no effect for me
RADEON_NO_USLEEPS=1 in /etc/profile can accelerate.

I dont know if this works for 2.6.x-kernels, but it works in 2.4.x-kernels with IGP-Support.


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