Hi

I have an IBM Thinkpad i Series 1200, Piii 750, 128MB RAM, with the following hardware
 installed according to lspci.

00:00.0 Host bridge: Acer Laboratories Inc. [ALi] M1621 (rev 01)
00:01.0 PCI bridge: Acer Laboratories Inc. [ALi] M5247 (rev 01)
00:06.0 Multimedia audio controller: Acer Laboratories Inc. [ALi]: Unknown device 5451 
(rev 01)
00:07.0 ISA bridge: Acer Laboratories Inc. [ALi] M1533 PCI to ISA Bridge [Aladdin IV]
00:10.0 IDE interface: Acer Laboratories Inc. [ALi] M5229 IDE (rev c3)
00:11.0 Bridge: Acer Laboratories Inc. [ALi] M7101 PMU
00:13.0 CardBus bridge: O2 Micro, Inc. OZ6812 Cardbus Controller (rev 05)
00:14.0 USB Controller: Acer Laboratories Inc. [ALi] M5237 USB (rev 03)
01:00.0 VGA compatible controller: Trident Microsystems: Unknown device 8620 (rev 5d)

With a standard installation of SuSE 7.3, this setup locks up tight when loading 
usb-ohci.o. 
Tight meaning no Ctrl-Alt-Del, no SAK-S-U-B, it's power off or nothing! I've 
downloaded 
2.4.18, compiled and installed it and it made no difference (SuSE 7.3 ships with 
2.4.10).

The "fix" appears to be to disable APM support in the kernel and enable ACPI! I don't 
know
which of these two options actually makes it work but one of them does and I can't be 
bothered to sit through another 10 minute fsck to find out :-( Since I found a number
of other posts about similar lockups while I was searching for a solution, I thought it
worth posting to say that this was how I'd fixed it. I have no idea why enabling ACPI
support in the kernel should fix usb-ohci but it does appear to do so! 

If anyone can tell me why this works then I'd like to know ;-) If anyone has a patch 
that makes usb-ohci work without ACPI being enabled then I'd quite like my 
APM support back :-(


Trevor Hemsley, Brighton, UK.
[EMAIL PROTECTED]


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