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? What would I have to add in order to insert
an appropriate tracepoint?
> > > 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.
Alan Stern
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