On Sunday 03 September 2006 05:34, Dieter Jurzitza wrote: > I recently got a HP VISUALIZE NT workstation, using 2x 1GHz PIII processors >. After installation ACPI was always disabled, the on board USB interface did not work >(kernel 2.6.11.4 (SuSE linux 9.3) > > I tested using acpi=force on the commandline and that solved two problems: > > 1.) shutdown -h now switches the machine off (should be expected :-):-) ) > 2.) much more important: the onboard USB interface works now. > > After patching dmi_scan.c and removing the blacklist-entry I get the following > message at boot time: .... ACPI is necessary to get the interrupts right for USB to work on this box. pci=noacpi and acpi=ht will cause ACPI to be disabled for interrupt routing and thus USB will fail with those. As Luming pointed out, Shaohua's _CRS workaround for the _BBN BIOS bug is what your system needed, and that is why "acpi=force" is working. It seems that perhaps the DMI blacklist entry pre-dated that workaround. Please verify that 2.6.18-rc7 works with "acpi=force" on this box, and if it does, please send me a patch to remove the entry in that kernel. thanks, -Len - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
