On Mon, 22 Feb 2010, Rafael J. Wysocki wrote: > On Monday 22 February 2010, Alan Stern wrote: > > On Sun, 21 Feb 2010, Rafael J. Wysocki wrote: > > > > > > > Anyway, we need to check if control gets back to acpi_suspend_enter(). > > > > Would PM_TRACE_RTC help? > > In my opinion that's worth doing. Here's what I got: [ 3.349334] PM: Resume from disk failed. [ 3.350060] Magic number: 0:141:321 [ 3.352583] hash matches drivers/base/power/main.c:477 [ 3.355144] tty tty46: hash matches [ 3.357742] i915 0000:00:02.0: hash matches So it appears that the video driver is indeed the culprit. Is there any way to narrow it down further? > > By concentrating on the video drivers, you may be missing part of > > the problem. Have you considered why pressing a key on the keyboard > > doesn't wake the system up? Nothing happens -- the power LED on the > > desktop case just keeps on blinking. > > We may just not set up the keyboard as a wakeup device. The other option is > that the BIOS has a problem with resume handling, in which case I have no > idea what to do. Here's my /proc/acpi/wakeup: Device S-state Status Sysfs node P0P4 S4 disabled pci:0000:00:1e.0 MC97 S4 disabled USB1 S4 disabled pci:0000:00:1d.0 USB2 S4 disabled pci:0000:00:1d.1 USB3 S4 disabled pci:0000:00:1d.2 USB4 S4 disabled pci:0000:00:1d.3 EUSB S4 disabled pci:0000:00:1d.7 PS2K S4 disabled pnp:00:09 PS2M S4 disabled pnp:00:0a GBEN S4 disabled It appears that PS2K is the keyboard. If I write "PS2K" to /proc/acpi/wakeup, I get: ACPI: 'PS2M' and 'PS2K' have the same GPE, can't disable/enable one seperately Apart from the misspelling, this doesn't bode well for making the keyboard a wakeup device. Furthermore, these values are not properly tied to the values in sysfs. For example, after echo enabled >/sys/devices/pci0000:00/0000:00:1d.7/power/wakeup the EUSB line in /proc/acpi/wakeup still says disabled. What next? Alan Stern _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
