[Nouveau] Macbook Pro 5, 1 - nouveau works if proprietary drivers are loaded first, then unloaded
marcin.slusarz at gmail.com
Sat Aug 14 10:54:50 PDT 2010
On Sat, Aug 14, 2010 at 11:13:11AM -0600, Jesse Johnson wrote:
> I have a Macbook Pro 5,1 and decided that I wanted to play around with Hardened
> Gentoo for fun. I have another Gentoo install on the same machine along side
> Mac OS X (I keep an extra partition free for when I want to play around, and I
> do like to play around.) I have seen that other people have had problems with
> the MBPs and booting with the nouveau drivers, but Hardened Gentoo really should
> be run without any binary blobs, so the nvidia drivers are out. The nvidia
> drivers will work with x11's opengl, but there is no 3D acceleration. That
> means no desktop bling :( What I have experienced with the nouveau drivers is a
> little different than what I saw while searching bug lists and forums because I
> did things a little different.
> On my non-hardened Gentoo install, I decided to get the nouveau drivers working
> there. I followed the directions for using the git sources on the official
> website, made sure my kernel was configured properly and installed. Once I had
> the kernel and the drivers built and installed, I rebooted, but without changing
> my xorg.conf to load the nouveau drivers. It booted up and loaded the nvidia
> drivers when X started, then I went to removing and loading modules, changing
> xorg.conf, etc... Basically, I wanted to get it working without having to
> reboot every time I changed something. I never plan on getting something that I
> haven't tried before right the first time.
> Once I killed X, removed all modules pertaining to the graphics drivers, changed
> my xorg.conf, then restarted X, the nouveau drivers were loaded and they
> worked. I played around a bit, seeing what kind of functionality there was (I
> built mesa with the gallium flag enabled) and was pleasantly surprised that
> despite the warnings about how the 3D accel is incomplete and not supported,
> most of it worked with a little tweaking here and there. Including my desktop
> bling :)
> Then the problems started. I had a working nouveau setup - or so I thought.
> After some proper blacklisting and whatnot to prevent the nvidia proprietary
> drivers from loading, I rebooted to test how the nouveau drivers would load at
> boot time. It got to the part about populating dev and the screen just went
> black. This is similar to the problems that others were having. I had push the
> power button to restart. Nothing with the display would work.
> Then, I started up using a different kernel version that did not have anything
> involving nouveau installed to fix things. I blacklisted the nouveau drivers in
> the hopes that letting X load the drivers would be different. No dice. Same
> black screen and holding down the power button to restart, only later. I hate
> restarting like that because Linux hates restarting like that.
> After some more fiddling around with it, here is the conclusion that I have come to:
> If I start X with the nvidia proprietary drivers, then kill the X, unload all
> video drivers, change my xorg.conf to load the nouveau drivers, then start X,
> everything works as it should. On the other hand, if the first time I try to
> start X, the nouveau drivers are loaded, I get the black screen. I'm guessing
> that this has something to do with the second GPU in the machine that is not
> enabled in Linux. I could try to enable it via EFI, but I am not comfortable
> with that because I am not familiar with messing with that stuff and don't even
> know the potential consequences of a mistake. Besides, that's only a guess. I
> could also write a script that is executed at startup that automates starting X
> with nvidia's drivers, killing X, unloading modules, switching xorg.conf files,
> Does anybody have another solution that has been tested and works? Maybe I just
> suck at google, but I could not find anything that will help.
> FYI, the hardened install hangs at the same spot, but there is no black screen.
> It just stops booting and does not log anything. I have not tried blacklisting
> the drivers on that install yet and letting X load what it needs. That might
> provide some useful info in the logs. Nothing useful is logged in the
> non-hardened install, but the hardened install tracks a lot more of what goes on
> with the system.
You are probably hitting this bug:
More information about the Nouveau