Date: Sun, 27 Jul 2014 16:03:19 +0200 From: Roland Smith <rsmith@xs4all.nl> To: Da Rock <freebsd-x11@herveybayaustralia.com.au> Cc: freebsd-x11@freebsd.org Subject: Re: Xorg, Radeon and KMS problems Message-ID: <20140727140319.GA2754@slackbox.erewhon.home> In-Reply-To: <53D4F46A.7010206@herveybayaustralia.com.au> References: <53D39B39.9010407@herveybayaustralia.com.au> <20140726141107.GA1382@slackbox.erewhon.home> <53D4D549.2040505@herveybayaustralia.com.au> <20140727120918.GA74913@slackbox.erewhon.home> <53D4F46A.7010206@herveybayaustralia.com.au>
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On Sun, Jul 27, 2014 at 10:45:30PM +1000, Da Rock wrote:
> >> Ok, haven't quite got it all in place yet - haven't had time to reco=
mpile
> >> Xorg yet without hal.
> > Setting "AutoAddDevices" to "off" is probably sufficient. And you only
> > need to rebuild xorg-server AFAIK.
> I'll give the conf option a shot. Takes a little while on my system to=20
> build, and its building some big stuff atm like thunderbird and=20
> libreoffice, so next day is latest I'd get it going.
BTW, if you're updating ports, you might want to give the update to pkg-1.3=
=2E1
a miss for now if you're running on amd64. It segfaults on that platform.
> > Check if it is possible to disable one of the graphics chips in the BIO=
S.
> > That could be a last resort fix. AFAIK Xorg doen not have proper suppor=
t for
> > using two graphics cards or switching beteen them.
> Not that I'm aware of - HP take away a lot of fine tweaking options in=20
> bios for some stupid reason, and I went looking last time I was playing=
=20
> with the dual card setup and HD. I'll have another peek though.
You should be able to disable one of the cards using device.hints(5).
=46rom your pciconf output;
vgapci0@pci0:1:5:0: class=3D0x030000 card=3D0x1445103c chip=3D0x9712=
1002 rev=3D0x00
hdr=3D0x00
vendor =3D 'Advanced Micro Devices [AMD] nee ATI'
device =3D 'RS880M [Mobility Radeon HD 4200 Series]'
class =3D display
subclass =3D VGA
...
vgapci1@pci0:2:0:0: class=3D0x030000 card=3D0x1445103c chip=3D0x68e4=
1002 rev=3D0x00
hdr=3D0x00
vendor =3D 'Advanced Micro Devices [AMD] nee ATI'
device =3D 'Robson CE [AMD Radeon HD 6300 Series]'
class =3D display
subclass =3D VGA
...
So you have two =E2=80=9Cvgapci=E2=80=9D devices. E.g. to disable the HD 63=
00, put
hint.vgapci.1.disabled=3D"1"
in /boot/device.hints and reboot. That should get rid of it.
Additionally (but unrelated), on a laptop you might want to set
hw.pci.do_power_nodriver=3D3
in /boot/loader.conf to power-down all hardware that's not attached to a
driver. That might make your battery last longer.
> Who's looking at the support for multiple cards in Xorg then? Is there a=
=20
> wiki/blog or such I can follow, help out with?
Not sure if anybody is. This is something only found on some laptops as a
power-saving thing.
And since most Xorg development is done on Linux, a solution might very well
be Linux specific.
<snip xorg.conf manual>
> > But I guess you'll have to remove one of the cards from your xorg.conf.
> > to force Xorg to use the other one.
> This could be clearer. I think I tried playing with this to get it to do=
=20
> what I want, but I got muddled following this. Perhaps you might=20
> understand better - is this what it means?:
>=20
> Section "Device"
> Identifier "Card1"
> Driver "radeon"
> BoardName "Radeon HD 6300"
> BusID "PCI:2:0:0"
> Option "LVDS" "built-in"
Use this instead:
Option "Monitor-LVDS" "Monitor0"
But if you disable one of the chips, it might not be necessary.
Good luck!
Roland
--=20
R.F.Smith http://rsmith.home.xs4all.nl/
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