Re: Dual head on a Powerbook
From: Tim Wojtulewicz <hidden>
Date: 2000-04-26 22:40:26
At 11:25 PM +0200 4/26/00, Jean-Jacques Levy wrote:
Already asked this question on Sun, 21 Nov 1999. And on Mon, 3 Jan 2000. On Tue, 4 Jan 2000, there was following answer from Benh: "features like mirroring and multi-head provided by the Rage LT and LT Pro video controllers of the PowerBook are not enabled by Linux drivers. I know Brad Midgley is working on implementing the LT Pro multihead. It would probably be possible to more easily enable simple mirroring if someone takes the time to hack into the driver." In the linuxcare web page, it's mentioned that "the video acceleration problem is truly weird, you can write to certain registers and only some bits go in, the other bits are stuck." Myself, for a presentation, I boot (No Video Driver option) with video on the external projector, and blank screen on LCD. It works; it's very unconvenient; it's with Xpmac (otherwise too slow). I would love to know current status. Is it not simpler to make a patch for video mirroring? Which is enough for presentations. Multihead is a luxurious solution. -JJ-
I've tried a couple of things, including setting up the video settings in MacOS and restarting to linux. That doesn't work. At the point where the display is first "initiailized", some text appears on the external monitor. I haven't been able to read the message completely and write it down, but I know it has some thing to do with "OF quiescence" and "fake <something>". I'm not to experienced with the PPC drivers and such, so I would have no idea what these mean. My current setup is now: Pismo Powerbook, LinuxPPC 2000, current linux-pmac-stable kernel (2.2.15-pre19), Xpmac.rev10 Tim -- ------- Tim Wojtulewicz Tim.Wojtulewicz@nau.edu (520)523-2543 http://dana.ucc.nau.edu/~tjw4 In the Windows world, you are one click away from harming yourself -- Elias Levy, Bugtraq ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/