Hi all.
I have a system with an Abit AT7 motherboard: VIA KT333, single Athlon,
512M RAM, onboard RTL8139 network, USB, USB2, 1394. *NO* onboard PS/2
keyboard or mouse ports.
Other: IDE HD, CD-RW, and DVD. Radeon 8500DV (will try getting that
working later :)
I have used the system successfully with 2.4, and have been trying to
get 2.5 to work. Until now, I haven't been able to get the USB keyboard
to work. It is initialized by the BIOS, and is usable by GRUB for
selecting boot images.
I finally found the culprit - "Local APIC Support on Uniprocessors" and
"IO-APIC on uniprocessors". If both items are enabled, the network
functions, but USB doesn't work. If not both are enabled (neither, or
Local APIC but not IO-APIC), then the USB system works, but the network
doesn't. :(
I am not using modules.
these are the only differences in .config:
multimedia linux-2.5.51 # diff -u working_network
working_usbkeyboard_config3
--- working_network 2002-12-11 15:43:31.000000000 -0500
+++ working_usbkeyboard_config3 2002-12-11 15:15:53.000000000 -0500
@@ -63,9 +63,8 @@
# CONFIG_SMP is not set
# CONFIG_PREEMPT is not set
CONFIG_X86_UP_APIC=y
-CONFIG_X86_UP_IOAPIC=y
+# CONFIG_X86_UP_IOAPIC is not set
CONFIG_X86_LOCAL_APIC=y
-CONFIG_X86_IO_APIC=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_NONFATAL=y
# CONFIG_X86_MCE_P4THERMAL is not set
I can send complete configs, lspci / lsusb / whatever else anyone wants.
Thanks
- Steve
Correction:
The problem is actually ACPI. With ACPI disabled, both USB and network
function correctly with local APIC + IO-APIC enabled or disabled.
Sorry for the red herring.
- Steve
Stephen Wille Padnos wrote:
[snip]
> I finally found the culprit - "Local APIC Support on Uniprocessors"
> and "IO-APIC on uniprocessors". If both items are enabled, the
> network functions, but USB doesn't work. If not both are enabled
> (neither, or Local APIC but not IO-APIC), then the USB system works,
> but the network doesn't. :(
[snip]