On Tue, 26 Apr 2011, Valdis.Kletnieks@xxxxxx wrote: > > > Bus 001 Device 006: ID 0e8f:0020 GreenAsia Inc. USB to PS/2 Adapter > > > Have you tried testing the adapter by plugging it in after the system > > is running? > > It works fine at the Grub screen. > > It *doesn't* work for the kernel when it initially starts up, even though a few > seconds ago the hardware worked just fine. > > It *does* work after I've unplugged/replugged it - I've tested both the USB > side and the PS2 side, in either case it starts working. > > I'm not sure what difference "plug it in after it's running" and "unplug/ > replug" will have. I suppose I could test that, but I'm suspecting the results > will be "it works fine after plugging it in once the kernel is up". It seems like the BIOS handover of the USB input device doesn't work properly. The way things usually work in such situations -- BIOS is able to understand USB input devices in a very basic mode (hidp) and translate the events into PS/2-looking events, so that things like grub (which don't understand USB HID) are able to see keyboard events -- BIOS presents those as PS/2 devices. Once kernel is booted, it takes over devices in this 'legacy' mode from BIOS, and initializes them properly as USB input devices. Seems like this process is broken on your system. Could you please try to disable legacy USB emulation in your BIOS, and see if the problem persists? (it will make USB keyboard unavailable in grub). -- Jiri Kosina SUSE Labs, Novell Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
