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. > What would I have to add in order to insert an appropriate tracepoint? Please follow Documentation/power/s2ram.txt . > > > > BTW, does anything change if you put acpi_sleep=sci_force_enable into the > > > > kernel command line? > > > > > > Nothing changes. I also added "pci=use_crs", based on a suggestion in > > > the log, but that didn't make any difference either. > > > > The failure to resume may be graphics-related, so please try to compile i915 > > statically into the kernel and set CONFIG_DRM_I915_KMS. > > Odd -- when I use "make menuconfig", that part of the menu > doesn't show up. Navigating through "Device Drivers -> Graphics > support" gives me this screen: > > <*> /dev/agpgart (AGP Support) ---> > <*> Direct Rendering Manager (XFree86 4.1.0 and higher DRI suppor > -*- Lowlevel video output switch controls > -*- Support for frame buffer devices ---> > [ ] Backlight & LCD device support ---> > Display device support ---> > Console display driver support ---> > [ ] Bootup logo ---> > > None of the entries in drivers/gpu/drm/Kconfig show up beyond the first > one. I had to go in and edit .config by hand to set CONFIG_DRM, > CONFIG_DRM_KMS_HELPER, CONFIG_DRM_I915, and CONFIG_DRM_I915_KMS all to > "y". Is this a bug in menuconfig? CC'ing the mailing list... > > Anyway, it didn't make any difference. The behavior was exactly the > same. Pressing the power button during suspend causes an > almost-instant hang, before the screen or anything else revives. > > 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. Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
