> Quoting Henrique de Moraes Holschuh <hmh@xxxxxxxxxx>: > Subject: Re: 2.6.21-rc1: T60 ACPI issues > > (CC changed from Borislav to ibm-acpi-devel). > > On Wed, 01 Aug 2007, Michael S. Tsirkin wrote: > > > > 2. Pressing Fn/F4 does not trigger suspend to ram > > > > This normally triigers ACPI event which triggers suspend to RAM on Ubuntu > > > > (echo mem > /sys/power/state works) > > > > > > I'll bet this is your CONFIG_THINKPAD_ACPI_INPUT_ENABLED=y. > > > I got the same, see my "THINKPAD_ACPI_INPUT_ENABLED seems regressive" > > > mail to Henrique and lkml an hour ago. > > [...] > > > > > 3. After suspend to RAM, system wakes up but laptop's screen is blank, > > > > switching VTs etc does not help. > > > > External screen wakes up OK though. > > > > dmesg output from boot attached. > > > > > > (I've not had that.) > > > > Bingo. > > sudo rmmod thinkpad_acpi cures both 2 and 3. > > Thanks for pointing this out. > > I can see how it would help with (2), as that prompty tells the firmware to > issue its default ACPI events for Fn+F4 upon removal. But I have *NO* idea > what thinkpad_acpi might be doing that is causing issues with the wake up > after a resume. My guess is that upon resume, I normally get some other acpi event which gets blocked with CONFIG_THINKPAD_ACPI_INPUT_ENABLED. > Please open a bug in bugzilla.kernel.org about it, and attach the full debug > output of a suspend+resume cycle with and without thinkpad-acpi loaded. > > Also, please try the same with thinkpad-acpi loaded, but > CONFIG_THINKPAD_ACPI_INPUT_ENABLED set to N. If the problem goes away, > please retest, but set hotkey_enable to 1 and do an "cat > /sys/bus/platform/devices/thinkpad_acpi/hotkey_recommended_mask > > /sys/bus/platform/devices/thinkpad_acpi/hotkey_mask" before the sleep. what's hotkey_enable? > You will probably need to enable a bunch of debug options in ACPI and > thinkpad-acpi to get good enough logs. It is probably worth posting the > acpid logs too: the real difference might be there. -- MST _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
