[Mageia-dev] Mageia support for GMA 3600 (Cedar Trail Atom)

Mon Mar 12 00:38:00 CET 2012

On Sun, 11 Mar 2012 tux99-mga at uridium.org wrote:
+
+> On Fri, 9 Mar 2012 tux99-mga at uridium.org wrote:
+> 
+> > On Fri, 9 Mar 2012, Thomas Backlund wrote:
+> > 
+> > > tux99-mga at uridium.org skrev 8.3.2012 02:18:
+> > > >
+> > > > Hi,
+> > > > I just tried Mageia 2 beta 1 on a Intel DN2800MT board hoping that it
+> > > > would have framebuffer support for the GMA 3600, but the attached
+> > > > monitor goes into standby (no signal) as soon as the frame buffer gets
+> > > > activated during boot.
+> > > >
+> > > > As far as I understand there is frame buffer support in the 3.3 kernel
+> > > > for the GMA 3600 so in theory it should work.
+> > > >
+> > > > Are you aware of this issue or should I do a bug report?
+> > > 
+> > > Yes.
+> > > 
+> > > There is a bug with Cedar Trail that got fixed upstream a few days after
+> > > 3.3-rc6 was released, so the fix is not in our current 
+> > > kernel-3.3.0-0.rc6.1.mga2, but it will be fixed in the next build.
+> > 
+> > Thanks, that's great, I will test the next build and then report back 
+> > how that works with my Cedar Trail board.
+> 
+> Hi, I noticed a new kernel packages showed up in the cauldron repo 
+> (3.3rc7) so I tried it immediately (reinstalled cauldron from scratch as 
+> I had overwritten the previous install with other distro tests) using 
+> the boot.iso image, but the video behaviour at boot is still the same, 
+> the monitor still goes into no-signal standby as soon as the drm stuff 
+> is started.
+> 
+> I have full access to the box via ssh so I have uploaded some logs that 
+> might help figure this out, it looks to like the kernel modules load 
+> fine but somehow they set a screen mode that the monitor doesn't like.
+> 
+> Basically I don't really know how the drm kernel modules and xorg 
+> interact (and I can't find any useful recent docs about it), who is 
+> responsible for setting the screen mode and where can I manually 
+> configure it, on the kernel line or xorg.conf?
+> (I have been spoiled by the binary nvidia drivers for too long :) )
+> 
+> dmesg: 
+> http://pastebin.com/SLBcgjXx
+> 
+> lsmod output:
+> # lsmod|grep gma
+> gma500_gfx            149940  0
+> drm_kms_helper         32743  1 gma500_gfx
+> drm                   207700  2 gma500_gfx,drm_kms_helper
+> i2c_algo_bit           13080  1 gma500_gfx
+> i2c_core               29836  5 
+> i2c_i801,gma500_gfx,drm_kms_helper,drm,i2c_algo_bit
+> video                  18640  1 gma500_gfx
+> 
+> /var/log/Xorg.0.log:
+> http://pastebin.com/ypw0DAnz
+> 
+> I'm unsure if this is only a config problem or if this is still due
+> to some bug.
+> 
+> Any pointers would be much appreciated.
+
+Sorry ignore the previous pastebins, those were without "vga=795" on the 
+kernel line, here are the correct ones:
+
+dmesg: http://pastebin.com/4t9L3GVm
+
+Xorg.0.log: http://pastebin.com/TsE4gUxW
+
+