[+cc David, Alex, Christian, dri-devel] On Tue, Oct 28, 2014 at 12:32 AM, Michael Shell <list1@xxxxxxxxxxxxxxxx> wrote: > > > Greetings, > > Well, I want to be able to have my cake and eat it too. I want to be able to > have the standard VGA/"hardware" classic console (not the framebuffer) but > I still want the /dev/dri/cardX devices so that I can use DRI under Xorg. > > Is this possible and if not, why not? > > > (I do hope I'm not bring up an issue with an obvious fix, but my searching > has not yielded an answer yet. For the record, I'm running modern kernel > (3.16.3) with much older x86 hardware [r100 Radeon video card].) > > > If I boot with the kernel nomodeset option I can get the classic > VGA/"hardware" console, but then I lose support for DRI/DRM: > > Oct 27 15:11:09 X kernel: [drm] Initialized drm 1.1.0 20060810 > Oct 27 15:11:09 X kernel: [drm] VGACON disable radeon kernel modesetting. > Oct 27 15:11:09 X kernel: [drm:radeon_init] *ERROR* No UMS support in radeon module > > and glxgears et al. turns slow. In more modern Xorg releases, DRI is > required for all hardware acceleration, so having /dev/dri/cardX is very > important: > > http://askubuntu.com/questions/463142/why-x-is-relying-on-software-instead-of-hardware-with-nomodeset-kernel-paramet > > > One reason I do not wish to use the framebuffer console is because of the > small font. 160 columns makes it difficult to tell which [OK] belongs with > which service. The selection of console fonts should always include a > set that gives us an 80 column screen and the docs should point this out. > > And I dislike any blanking or video mode changes during boot. > > Can't the kernel just declare that it is capable of setting the video mode, > provide the /dev/dri/cardX devices and leave the console alone, but still > allow Xorg to call for a new mode and use /dev/dri/cardX if/when it sees fit? > > In an ideal world, there would be some kernel option such as fbcon=no. > > In the kernel Documentation fbcon.txt it mentions "fbcon=map:1 tells fbcon not > to take over the console." But, IIRC, from my tests I wasn't able to use this > to get a VGA/"hardware" console and still be able to have /dev/dri/cardX devices. > > > > Cheers and thank you, > > Mike Shell > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
