On Thu, 2015-04-09 at 10:08 +0200, John Paul Adrian Glaubitz wrote: > On 04/09/2015 12:38 AM, Milan Kupcevic wrote: > >> Well, yes. As you could see from the bug report you linked above, > >> compiling radeonfb into the kernel broke X on basically all > >> Radeon cards. > >> > > > > It seems that radeonfb was compiled into the kernel since the dawn > > of time. > > On the powerpc Debian kernel, yes, on the other architectures, no. > radeonfb has been deprecated long time ago and should no longer be > used. > > The only reason it was compiled into the powerpc kernel without anyone > complaining is the fact that the xf86-video-ati (= Radeon X.Org) driver > in Wheezy was still old enough [1] to support userland mode-setting > which was dropped upstream in version 7.0.0 almost three years ago [2]. > > This is no longer true in Jessie and therefore we have to use radeon, > not radeonfb. Otherwise you won't get any X display. If you use the xserver-xorg-video-radeon driver. (Which of course, is the sensible choice in an actual Debian installation.) > >> The reason is that the radeon KMS module does not work once > >> radoenfb has been loaded once. Even if you unload radeonfb later, > >> the radeon module will still refuse to work meaning X will not be > >> usable. > >> > > > > This is good to know. > > I did thorough testing for the bug report you linked above which is > why I am a bit surprised you could convince Ben so easily to partly > revert my change. I think I also explained in the other bug tracker > that you have to use KMS these days as UMS is being phased out. [...] It isn't reverted. All I've done is to add radeonfb.ko to the drivers that are included *in the installer*. Neither radeon.ko nor xserver-xorg-video-radeon are included in the installer, so how could they possibly be used? If you though those should be used in the installer, you should have told people that earlier. As it is, I think that the installer should be able to work using radeonfb.ko and xserver-xorg-video-fbdev, though I'm not sure whether radeonfb.ko will be loaded automatically. Ben. -- Ben Hutchings I'm always amazed by the number of people who take up solipsism because they heard someone else explain it. - E*Borg on alt.fan.pratchett
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