Date: Thu, 7 Dec 2006 16:01:44 +1100 (EST) From: Ian Smith <smithi@nimnet.asn.au> To: Lutz Boehne <lboehne@damogran.de> Cc: freebsd-acpi@freebsd.org Subject: Re: screen dead after resume on Thinkpad X30 Message-ID: <Pine.BSF.3.96.1061207154836.3815C-100000@gaia.nimnet.asn.au> In-Reply-To: <45775BC9.5060102@damogran.de>
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On Thu, 7 Dec 2006, Lutz Boehne wrote:
> I'm tracking RELENG_6 and after one upgrade, my Thinkpad X30 does not
> properly wake up out of standby anymore. After waking up, the laptop
> will still respond to key presses and I am able to reboot it by pressing
> Ctrl-Alt-Del, but nothing will appear on the screen until I see the BIOS
> POST.
>
> I spent some time to narrow down which changes in RELENG_6 seem to be
> responsible and found out that RELENG_6 from August 16th 2006 12:01am
> works fine and that RELENG_6 from 08:00pm that day does not.
>
> Candidate files are:
> src/sys/dev/acpica/acpi_video.c
> src/sys/i386/acpica/acpi_machdep.c
> src/sys/i386/acpica/acpi_wakecode.S
> src/sys/i386/acpica/acpi_wakeup.c
>
> I locally replaced those files in today's RELENG_6 with versions from
> before August 16th, built/installed kernel and world and resume works
> properly again.
Not sure if it's your {,only} problem, but the default value for
hw.acpi.reset_video changed fairly recently, I think from 1 to 0, as I
had to set hw.acpi.reset_video=0 in /etc/sysctl.conf on a Thinkpad T23
on 6.1-RELEASE. You'll find recent references to this in the archives.
Try hardwiring the value from your working version into sysctl.conf.
FWIW, I also needed hw.syscons.sc_no_suspend_vtswitch=1 on the T23.
Cheers, Ian
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