No response so far, trying again.
Anyone knows how IRQ 5 is chosen both for my eth0 (tulip, external
card) driver and sound (maestro, on motherboard) on my Compaq Presario
5640/5670 when other interrupts are available: 4,6,7,9,10,11?
Also the graphics card is allocated to IRQ5:
01:00.0 VGA compatible controller: 3Dfx Interactive, Inc. Voodoo Banshee (rev 03)
(prog-if 00 [VGA])
Subsystem: Guillemot Corporation Maxi Gamer Phoenix
Flags: VGA palette snoop, 66Mhz, fast devsel, IRQ 5
How to steer away one of the units from IRQ 5 to avoid interrupt
sharing/conflicts? In the documentation to both the tulip and maestro driver I
have not found any option to control the IRQ. What unit takes care of
allocating IRQ's if the card driver does not require one, the kernel
or the BIOS?
The BIOS for this computer has very limited number of options, and as
mentioned above the sound hardware is on the motherboard. Also only
two PCI slots are available (one with the ethernet card, the other
with a PCTV card, IRQ 3), so shuffling cards is not much to try.
