USB suspend

Sergey mafia_rgd at mail.ru
Mon Dec 5 05:24:02 UTC 2005


Have anyone experienced problems with suspending USB devices on 
# echo standby >/sys/power/state ?

The kernel says:
Stopping tasks: =============================================================|
ACPI: PCI interrupt for device 0000:00:11.5 disabled
ACPI: PCI interrupt for device 0000:00:11.4 disabled
Could not suspend device 0000:00:11.4: error -22
ACPI: PCI Interrupt 0000:00:11.5[C] -> GSI 11 (level, low) -> IRQ 11
Some devices failed to suspend
Restarting tasks... done

The device driver is uhci_hcd 

# lspci | grep USB
00:11.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 1b)
00:11.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 1b)
00:11.4 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 
Controller (rev 1b)

This happens with kernel from www.kernel.org
# uname -r
2.6.14.3

The original kernel from fedora 4 pack seems to be free of this, however I can 
not get why. Compiling my kernel sources with the FC4 config 
(config-2.6.11-1.1369_FC4) does not help - USB suspend still does not work. 
It seems that FC4 comes with somehow patched kernel.

Any comments?




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