Date: 24 Dec 2002 10:10:04 -0500 From: Greg Troxel <gdt@ir.bbn.com> To: Baas van Grat <lo0@gmx.net> Cc: freebsd-mobile@FreeBSD.ORG Subject: Re: Thinkpad 600 (Type 2645) & display settings & sound Message-ID: <rmi3conbghf.fsf@fnord.ir.bbn.com> In-Reply-To: Baas van Grat's message of "Tue, 24 Dec 2002 12:26:44 %2B0100" References: <20021224122644.6bcf869a.lo0@gmx.net>
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[display sort of blanked after 10 min] I have this problem too, on a a 2645-4AU. To recover, I switch to a text console and back. I think the BIOS is doing some power saving, and this could perhaps be turned off with the 'ps2.exe' program, or adjusted to be longer. Curiously, this problem only appeared when I swapped TFT panels (the whole top half) with a 2645-41U. I find that it goes into this backlight-only mode after resume, but that if X activates the screensaver it goes all black, and then the shift key brings it back. There are several issues with sound (all from memory and a bit fuzzy): There was a 'csa' pci driver that attached the sound chip, and one has to remove this to make it work. See http://www.cse.ucsc.edu/~dkulp/fbsd/laptop.html#notes118 for details and a kernel config (thanks to Kevin once again). The sound driver does not save/restore the mixer levels across suspend/resume, so when it comes back they are zero. This is a SMOP. The chip in the 600E (2645-4AU, don't know about 600s (-41U at least)) has a third set of registers with a funky extra-indirect interface to get at them, and the mic gain is there instead of the usual place for similar chips. AFAIK, this only affects recording. Greg Troxel <gdt@ir.bbn.com> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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