I didn’t read far enough ahead in my backlog, if that makes sense. i915 has another update, to 20160808.
If you’ve got a pcm audio device – and you probably do – and a headphone jack – ditto – this thread may help you find the right sysctl to enable it on DragonFly.
If you post about a problem and later solve it, you will help many people in the future if you summarize the problem and (very important) the fix. In this case, Nelson H. F. Beebe installing DragonFlyBSD 5.6.2 on his Dell Precision 7920 workstation.
I don’t know which product names correspond with those chipsets, but you may be able to tell who you are. Interesting note: original driver via OpenBSD, then synced from FreeBSD version. Cross-pollination!
i915 DRM has been updated to match the Linux 4.8.17 version, in DragonFly. It includes some OpenBSD work too, interestingly.
Francois Tigeot has made a number of updates to the ttm and radeon code, bringing it line with the Linux 4.9 kernel version. If you have a radeon(4)-using video card, you may find this useful.
Also, evergreeen and radeonsi chipset users have acceleration disabled. You may not notice depending on your workload.
As an example of how old design decisions have lasting effects, the POSIX standard still calls for terminal output to accommodate mechanical delay, as noted in this DragonFly commit – i.e. if output was still a line printer instead of a glass TTY, or, as it is 99.9% of the time today, xterm or puTTY or etc. etc.
After 56k, I stopped paying attention, but apparently there’s stated baud rates of 460,800 and 921,600. And your DragonFly terminal can handle them, too.
The radeon driver support on DragonFly now matches Linux 4.7.10. Update and test, especially if you have one of the chipsets mentioned.