Date: Sun, 8 Aug 2010 10:15:57 +0100 From: Bruce Cran <bruce@cran.org.uk> To: "geoffrey.ferrari" <geoffrey.ferrari@me.com> Cc: freebsd-acpi@freebsd.org Subject: Re: Black Display after suspend/resume on Thinkpad X201 with 8.1/amd64 Message-ID: <20100808101557.000041ed@unknown> In-Reply-To: <35f41cee-79d9-4bad-c4b1-f6f7f816cf6f@me.com> References: <35f41cee-79d9-4bad-c4b1-f6f7f816cf6f@me.com>
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On Sat, 07 Aug 2010 02:30:13 -0700 (PDT) "geoffrey.ferrari" <geoffrey.ferrari@me.com> wrote: > The current situation is that the machine will su=EF=BB=BFspend using > acpiconf -s 3 and it will also resume. The problem is that the LCD > display does not resume correctly after suspend - instead it just > stays black. I've been randomly tweaking various things, and get > slightly different results. Sometimes the display stays black in the > sense the display is still completely switched off. Othertimes, I > think the display switches on, but nothing is displayed, so that the > display is on but showing nothing except a black background. However, > I can still type blind and e.g. shutdown/restart the machine. I'm having the same problem with a Dell XPS M1530 and 9-CURRENT - the display refuses to switch on after resuming. I've tried hw.acpi.reset_video, switching consoles using vidcontrol and using the=20 acpi_video module: setting the reset_video sysctl causes the machine to reboot during resume, and toggling hw.acpi.video.crt1.active just produces a beep with no change in the LCD status (it works before suspend). http://blog.higherthings.org/borghardt/article/3077.html suggests that on a different XPS machine with Linux the VESA BIOS Extensions shouldn't be saved/restored - is there a way to try disabling that on FreeBSD? --=20 Bruce Cran
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