4.6 DRM/i915 update CFT (Sandy Bridge?)/IvyBridge/Haswell/Broadwell/SkyLake/KabyLake supported

Matthew Macy mmacy at nextbsd.org
Sun May 22 22:20:09 UTC 2016




 ---- On Sun, 22 May 2016 15:10:54 -0700 Juan Ramón Molina Menor <listjm at club.fr> wrote ---- 
 > Hi and thanks in advance for your work! 
 >  
 > I have a regression with respect to the drm-next-3.9 branch, which works  
 > well with my Haswell (HD 4400) GPU on a ThinkPad S440: Loading the  
 > i915kms module through startx or directly with kldload leads to an  
 > instant panic: 
 >  
 > [drm:0xffffffff821aa180s] *ERROR* failed to init modeset 
 > panic: fix mtrrs you schmuck 
 >

  
Thanks. The panic is just something unimplemented in the attach failure path.  My next image will more heavily instrument the attach path and, time permitting, have the mtrr panic fixed. I'll send out a note tonight.

-M



 > Unfortunately, I’m booting this laptop with a small USB stick just for  
 > testing and cannot get cores, but I’ve uploaded a crappy image of the  
 > crash to the wiki page of the laptop, where supplementary information is  
 > available: 
 >  
 > https://wiki.freebsd.org/Laptops/ThinkPad_S440 
 > https://wiki.freebsd.org/Laptops/ThinkPad_S440?action=AttachFile&do=get&target=panic-DRM-46.jpg 
 >  
 > Let me know if I can help somehow. 
 >  
 > Best regards, 
 > Juan 
 > 



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