I have a problem that seems to be related, though I'm not using Virtual
PC. In Ubuntu 7.04 my PS/2 keyboard stopped working, although it had
worked in 6.10. I started tweaking my BIOS settings, and noticed that I
had disabled USB 2.0 support; I think this was as a workaround to some
earlier problem, but don't remember the specifics. Enabling USB 2.0
fixes the keyboard problem. The computer is a Shuttle XPC SK41G.
I am attaching the output of lspci -vv when USB 2.0 is disabled in the
BIOS; the following diff shows how the output changes when USB 2.0 is
enabled.
--- lspci.bad 2007-05-17 23:21:38.000000000 +0300
+++ lspci.good 2007-05-17 23:25:06.000000000 +0300
@@ -81,6 +81,17 @@
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
+00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82) (prog-if 20
[EHCI])
+ Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer FX41 motherboard
+ Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR- FastB2B-
+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
+ Latency: 32, Cache Line Size: 64 bytes
+ Interrupt: pin D routed to IRQ 12
+ Region 0: Memory at ec102000 (32-bit, non-prefetchable) [size=256]
+ Capabilities: [80] Power Management version 2
+ Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
+ Status: D0 PME-Enable- DSel=0 DScale=0 PME-
+
00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge
Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer FX41 motherboard
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping+ SERR- FastB2B-
** Attachment added: "lspci -vv with USB 2.0 disabled; keyboard does not work"
http://librarian.launchpad.net/7689048/lspci.bad
--
Mouse, Keyboard disabled in Virtual PC
https://bugs.launchpad.net/bugs/109027
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