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

Tue May 31 19:37:58 UTC 2016

 ---- On Tue, 31 May 2016 12:01:47 -0700 Jakob Alvermark <jakob at alvermark.net> wrote ---- 
 > Hi again, 
 >  
 > I noticed there was a new image today, cftdisk_2016052307.img.xz 
 > Tried booting it on the Yoga 12. 'kldload i915kms' does not panic now, but 
 > something is not right. 
 > After the module is loaded, the screen only updates every 5 seconds or so. 
 > Makes it very interesting to type. 
 >  
 > Attached it the dmesg. If you need any more let me know. 
 >  
 > Also tested this on my Acer Aspire E3-112, Pentium N3540 (Baytrail 
 > M/Valleyview). Looks better, console stays fine and responsive after 
 > loading the module. The image did not have X on it so I didn't test that. 
 >  
 > Thanks, 

I started the image build before I went to bed. Based on the image size something failed during image generation process. I'll put up a working one. 

However, that wouldn't explain the infrequent updates. Perhaps a merge bug - I ended having to update my tree at the last minute. 
The last time I synced the libmd was broken.

-M

 > Jakob 
 >  
 > On Sun, May 22, 2016 20:52, Jakob Alvermark wrote: 
 > > Hi, 
 > > 
 > > 
 > > I tested the image disk_16052200.img.xz on my ThinPad Yoga 12 (Broadwell) 
 > >  It panics when I try 'startx' or 'kldload i915kms' 
 > > 
 > > 
 > > Attached core.txt.0 
 > > 
 > > 
 > > Thanks for working on this! 
 > > 
 > > 
 > > Jakob 
 > > 
 > > 
 > > On Sun, May 22, 2016 09:20, Matthew Macy wrote: 
 > > 
 > >> 
 > > 
 > >> I'm happy to announce a call for testers for the 4.6 update of drm and 
 > >> i915. The driver has been successfully tested on IvyBridge, Haswell, 
 > >> Broadwell and Skylake. At least basic HW 3D acceleration should work, 
 > >> VGA and DP out are known to work. Video decode has only been tried 
 > >> once and that did not work. 
 > >> 
 > >> At this point I'm most interested in taking an inventory of what is 
 > >> broken where. My priorities are common sense: 
 > >> 
 > >> a) stability b) fixing 2D artifacts c) fixing 3D problems d) video 
 > > decode d) 
 > >> output support e) other features 
 > >> 
 > >> At this time "prime" (needed for switching between GPUs, compute 
 > >> APIs, and DRI3) is not yet supported. All the pieces are in place but 
 > >> support existing functionality is a higher priority. Userptr (mapping 
 > >> user memory in to the driver) requires VM changes. Support is planned, 
 > >> but likely post-11. 
 > >> 
 > >> 
 > >> A few caveats are in order: 
 > >> - The only reported test on Sandy Bridge indicated severe artifacts. 
 > >> - Arrandale (pre-Sandy Bridge) and earlier are not yet supported by 
 > >> this update. The intel_i810 code has been heavily localized for FreeBSD 
 > >> making it more difficult to integrate. Thus there are holes in the gmch 
 > >> support. - This update is 64-bit only. There is no good reason to be 
 > >> running in 32-bit mode on any of the hardware supported by this driver. - 
 > >> Although it works fine for me on my Skylake the one other tester 
 > >> I have reports from indicates that the driver isn't actually 
 > >> attaching and creating aliases for the drm device nodes. 
 > >> 
 > >> 
 > >> Please send issue/success reports to the freebsd-x11 mailing list. 
 > >> I may be preoccupied with work matters for periods of time. Sending 
 > >> it to the list makes sure that the messages don't get lost. 
 > >> 
 > >> 
 > >> If you encounter problems with startx, please try loading the i915 
 > >> kmod in isolation and make sure that it switches correctly to vt_fb. If 
 > >> you're not running efifb you'll notice a change in resolution. If it 
 > >> works but is slow or has artifacts you may try switching to UXA by 
 > >> removing /etc/X11/xorg.conf.d/20-intel.conf (if you're using 
 > >> the USB image). If you've built from source, try configuring SNA 
 > >> instead. SNA is much better behaved for me. 
 > >> 
 > >> 
 > >> 
 > >> The usual rules apply for kernel debugging. There should be copious 
 > >> information on that in the handbook and elsewhere. If that proves to be 
 > >> problematic for people I will send out a follow up mail. 
 > >> 
 > >> A couple observations: 
 > >> 
 > >> 
 > >> 
 > >> - The FreeBSD PTB insist that a debugger be in tree but that it 
 > >> pre-date GPL2, consequently kernels are, by default compiled with DWARF2 
 > >> which is very poor at retain debug information in the presence of any 
 > >> optimization. If this is a problem, either recompile everything with -O0 
 > >> (add CFLAGS += -O0 in drm2 and 
 > >> i915kms Makefiles, and pass COPTFLAGS=-O0 to buildkernel) or install a 
 > >> newer kgdb from ports. 
 > >> 
 > >> 
 > >> - The purpose of encrypted swap is that the data on disk be 
 > >> unrecoverable. This is somewhat at cross purposes with savecore. So don't 
 > >> do that. 
 > >> 
 > >> 
 > >> 
 > >> Now that this is out I will be switching gears to bringing up amdgpu 
 > >> and radeon support. I have no hardware that uses the radeon driver so I 
 > >> will have to rely on Jean for testing and support there. 
 > >> 
 > >> 
 > >> Those of you wishing to try your hand at testing from source can 
 > >> fetch our repo from github at: 
 > >> 
 > >> 
 > >> https://github.com/iotamudelta/freebsd-base-graphics 
 > >> 
 > >> 
 > >> 
 > >> Make sure to check out the drm-next-4.6 branch. 
 > >> 
 > >> 
 > >> 
 > >> 
 > >> If you'd rather just try it on a usb pen driver you can also 
 > >> obtain a prebuilt memstick image with this branch installed along with 
 > >> xorg and some commonly used ports at: 
 > >> 
 > >> http://www.bsddesktop.com/images/disk_YYMMDDHH.img.xz 
 > >> 
 > >> 
 > >> 
 > >> There is no root password and the user/pw is joeuser/joeuser. 
 > >> 
 > >> 
 > >> 
 > >> 
 > >> If you're curious about what's on it, the script used to 
 > >> create the image is here: 
 > >> 
 > >> http://www.bsddesktop.com/images/usbcreate.sh 
 > >> 
 > >> 
 > >> 
 > >> 
 > >> If you'd like to help out with collecting data on what 
 > >> laptops are supported please run Warren Block's notebookstats script: 
 > >> 
 > >> http://www.bsddesktop.com/images/notebookstats 
 > >> 
 > >> 
 > >> 
 > >> It's also installed under /usr/local/bin on the image. 
 > >> 
 > >> 
 > >> 
 > >> If I've missed anything please let me know and I will follow up. 
 > >> 
 > >> 
 > >> 
 > >> -M 
 > >> 
 > >> 
 > >> 
 > >> 
 > >> _______________________________________________ 
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 > >> 
 > >> 
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