Messages in this thread | | | Subject | Re: enabling kms for i915 disables brightness control and xrandr | From | Soeren Sonnenburg <> | Date | Tue, 31 Mar 2009 00:57:50 +0200 |
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On Mon, 2009-03-30 at 14:34 -0700, Jesse Barnes wrote: > On Mon, 30 Mar 2009 15:37:19 +0200 > Soeren Sonnenburg <sonne@debian.org> wrote: > > > On Sun, 2009-03-29 at 15:22 +0200, Soeren Sonnenburg wrote: > > > On Sun, 2009-03-29 at 14:07 +0100, Sitsofe Wheeler wrote: > > > > (CC'ing dri-devel, Eric Anholt and Jesse Barnes) > > > > > > > > On Sun, Mar 29, 2009 at 12:34:01PM +0200, Soeren Sonnenburg wrote: > > > > > Dear all, > > > > > > > > > > I am not sure if this is just a user error/ too old userspace > > > > > problem, > > > > > > > > [User stated that 2.6.3 intel driver is being used in another > > > > email] > > > > > > Just to not cause any (further?) confusion, I was using 2.6.1 when I > > > wrote that email and after compiling/upgrading to 2.6.3 a number of > > > problems vanished (like Xv works, screen resolution is correct, > > > things are *a lot* faster with UXA). However, brightness still only > > > works via setpci and xrandr only shows the 1024x600 modeline. > > > > > > > > but I recognized that when I enable kernel based modesetting on > > > > > a intel 945 based samsung nc 10 netbook, I loose brightness > > > > > control from within X and X resolutions are wrong (instead of > > > > > 1024x600 it is 1024x1024) and xrandr does no longer have the > > > > > all the modelines ranging from 1024x600 to 640x350... Trying to > > > > > change resolutions / setting the brightness via xrandr results > > > > > in error messages being printed. > > > > > > > > > > Furthermore, this same flag disables Xv support.. > > > > > > > > > > However, screen switches between terminal and X are quite fast > > > > > now (without any flicker) and suspend and everything works > > > > > stably. > > > > > > > > > > I recognized that I can set the brightness via > > > > > > > > > > setpci -s 00:02.1 F4.B=XX > > > > > > > > > > (XX ranging from 00 to FF) just fine... > > > > One more thing: Connecting an external display I could turn it on via > > xrandr --auto successfully. However, it was not possible to turn the > > internal display off (xrandr --output LVDS1 --off) and switching to > > the console with the external display connected I managed to freeze > > the machine. Turning the external display off worked somehow (the > > display then showed vertical stripes) but I could switch to console. > > Have you filed bugs for these problems? I think the brightness control > issue is due to some missing bits on the 2D side (we don't enable > backlight property control when KMS is active, but should), the other > issues sound like bugs.
I did nothing besides asking here on lkml. Where should I report what?
Soeren -- For the one fact about the future of which we can be certain is that it will be utterly fantastic. -- Arthur C. Clarke, 1962
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