Created attachment 24234 [details]
The boot fails completely (no usable trace) when the acer-wmi+wmi is in-kernel. I've compiled it as module, so here is the trace extract (full trace included):
[ 86.439943] WARNING: at fs/sysfs/dir.c:477 sysfs_add_one+0x65/0x7a()
[ 86.439951] Hardware name: TravelMate 5730
[ 86.439957] sysfs: cannot create duplicate filename '/devices/virtual/wmi/05901221-D566-11D1-B2F0-00A0C9062910'
This is on Acer TravelMate 5730G.
re-assign to John, the maintainer of acer-wmi driver.
Thanks, Len, for reassigning properly. Now, anyone have any idea how get_maintainer.pl named me and Johannes for acer_wmi.c?
./scripts/get_maintainer.pl -f drivers/platform/x86/acer-wmi.c
Carlos Corbacho <email@example.com>
John W. Linville <firstname.lastname@example.org>
Len Brown <email@example.com>
Alan Jenkins <firstname.lastname@example.org>
Johannes Berg <email@example.com>
Looks like a bug in the ACPI-WMI driver, not acer-wmi. Probably related to the change for autoloading which added the sysfs interface.
Oldřich, can you please attach your DSDT?
Created attachment 24271 [details]
Content of /proc/acpi/dsdt
applied to acpi-test tree
Confirmed, works for me.
Handled-By : Carlos Corbacho <firstname.lastname@example.org>
Patch : http://patchwork.kernel.org/patch/69795/
Tested-by: Oldřich Jedlička <email@example.com>
Fixed by commit d1f9e4970742bb1e22d07b01bd44f9c357d25c42 .