On Sun, 14 Feb 2010, Rafael J. Wysocki wrote:
> On Sunday 14 February 2010, Alan Stern wrote:
> > On Sat, 13 Feb 2010, Rafael J. Wysocki wrote:
> >
> > > > The bigger problem is that with a normal sleep ("echo none >pm_test"),
> > > > the system doesn't wake up. Pressing a key or a mouse button does
> > > > nothing. Pressing the power button causes the machine to start up
> > > > again, but the screen remains blank and there's no response to network
> > > > pings.
> > > >
> > > > This was with more or less standard 2.6.33-rc6 (Greg KH's patch set was
> > > > applied but none of your PM patches). The motherboard is an Intel
> > > > ICH5 with a 32-bit CPU. Any ideas on ways to approach this?
> > >
> > > That depends on the graphics adapter. Is it Intel or AMD?
> >
> > $ lspci -s 2.0
> > 00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated Graphics Controller (rev 02)
>
> Well, that is supposed to work. Do you have KMS turned on?
It's hard to tell. CONFIG_DRM and CONFIG_DRM_HELPER were both set to M
and the i915 driver was loaded, which pulled both of them in as well.
But lsmod showed that i915's usage count was 0 and there were no kernel
messages about the framebuffer device; the only relevant messages were:
[ 41.814441] [drm] Initialized drm 1.1.0 20060810
[ 41.869690] pci 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 41.869705] pci 0000:00:02.0: setting latency timer to 64
[ 41.883076] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
Also, the console remained in the BIOS's original 80x25 video mode.
Since I wasn't running X11 during the test, KMS shouldn't have made any
difference, right?
> > Do you need any more information than that?
>
> Is the problem reproducible with init=/bin/bash vga=0?
Yes. I tried booting with no initramfs and with "init=/bin/bash
vga=0". Just as before the suspended machine didn't do anything when I
pressed keys on the keyboard, and pressing the power button caused it
to come back up totally unresponsive with the screen blank and the
CapsLock and ScrollLock lights blinking.
Alan Stern
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