Date: Wed, 04 May 2005 09:29:16 -0700 From: "Kevin Oberman" <oberman@es.net> To: Laurent Debacker <debackerl@gmail.com> Cc: freebsd-acpi@FreeBSD.org Subject: Re: =?iso-8859-1?q?Toshiba_Port=E9g=E9_4000_laptop?= Message-ID: <20050504162917.0BC4B5D07@ptavv.es.net> In-Reply-To: Your message of "Thu, 28 Apr 2005 18:04:31 %2B0200." <75751ca8050428090466a8bfa3@mail.gmail.com>
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> Date: Thu, 28 Apr 2005 18:04:31 +0200 > From: Laurent Debacker <debackerl@gmail.com> > Sender: owner-freebsd-acpi@freebsd.org > > Hi > > I'm running FreeBSD 5.4-RC3 on a Toshiba Port=E9g=E9 4000 laptop. I'm > running the kernel in ACPI mode, with Toshiba ACPI extension enabled. > > When my laptop wake up, the screen becomes white from the bottom to > the top, always brighter and brighther until completely white. However > the screen is not perfectly white, it's a bit odd, a bit as if the LCD > would be transparent. What I need to do is to switch the video output. > > I always tried to suspend my laptop using the /usr/sbin/zzz command > once. When it waked up, I think the disk's driver wasn't reloaded. > Indeed when I asked FreeBSD to shut down, it couldn't sync the inodes. > > I tried to suspend it using Gnoppix, and I got no screen problem. > > I'd be glad to help you to enhance the ACPI system of FreeBSD. Just > tell me what to type. And how to not loss all my inodes :p I don't > want to pass another 10hours or so to reinstall and reconfigure my > lovely FreeBSD. > > I'm a C/C++/C# developper, but with not much real experience since I'm > still a student. Been there, seen that. What is happening is the the graphics card is no longer talking to the display. I used to see this on my IBM T30, although mine was not very uniform. It would just start "blooming" to white in various areas. I thought of it as the literal display of bit rot. You might try playing with some sysctls like hw.acpi.reset_video and hw.syscons.sc_no_suspend_vtswitch. Also, have you tried John Baldwin's acpi_video_dpms patch? I need it for the Radeon on my T30. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634
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