CFT update day 2

[Eric McCorkle]

Letting you know, I had an error in detection.  I'm trying to get a change done before code slush, but I will circle back and provide a detailed report 

On May 23, 2016 4:12:52 AM EDT, Matthew Macy <mmacy at nextbsd.org> wrote:
>
>The highlights for today are the following:
>
>Bug fixes:
>- Will Andrews fixed attach for some laptops (such as the Carbon X1).
>  The Carbon X1 has a quirky BIOS that doesn't allow the OS to
>  enumerate the GPU's interrupt.
>- Will Andrews identified a conditionally uninitialized return in
>  idr_find that could lead to a panic in some cases.
>- Fixed a panic in mtrr_del frequently seen when attach failed.
>- Sleep/wakeups with interrupts are largely implemented correctly
>  now. Previously a polling 10ms sleep was used. I'm still
>  concerned that the code really needs to be level-triggered.
>
>Cleanups:
>- Logging is now enabled for the first 10s after attach unless
>  dev.drm.drm_debug_keep=1.
>- Unimplemented warnings are off by default.
>
>As of this moment the latest USB image is:
> http://www.bsddesktop.com/images/cftdisk_2016052307.img.xz
>
>The USB image now has sync disabled on var. This should improve
>responsiveness for most people with slow USB pen drives. If
>you're having issues that require retaining logs you'll need
>to "zfs set sync=enabled zrootusb/var".
>
>The USB image now includes kde4 and xfce. It is also much larger, for 
>this iteration you will need a 16GB USB key. The next one will probably
>not be quite so large. If size is a common problem let me know. It's 
>difficult to buy a USB key that is less than 16GB today.
>
>joeuser's .xinitrc is configured to start xfce with  startx. To start
>kde 
>run: service kdm4 onestart.
>
>Note that the image name has changed. The most recent should be
>self-evident in: http://www.bsddesktop.com/images 
>
>Helpful hint: use a 1MB blocksize for dd and run gpart recover
>to fix label warnings. Assuming your USB pen drive shows up as
>/dev/da0 and cftdisk image is the one I just posted:
>
>unxz -f cftdisk_2016052307.img.xz; dd if=cftdisk_2016052307.img
>of=/dev/da0 bs=1M; gpart recover da0
>
>And as a reminder, if you're having problems with X on the USB
>key, try disabling it by moving /etc/X11/xorg.conf.d/20-intel.conf
>somewhere else on your file system.
>
>If using the github repo, make sure you're using the drm-next-4.6
>branch.
>
>Cheers.
>
>-M
>
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