Anyone using AMD Radeon R7 M360 with Linux?

[Gene Heskett]

On Tuesday 09 February 2016 13:18:56 Dave Stevens wrote:
[...]
> sorry to hear that Gene, not my experience at all. I bought a 4770
> when it came out and it's still just sitting there doing its job.
>
> D

That 4770 sounds fairly recent, and I am happy to hear its working. The 
last ATI I bought was years ago now, a 9200HD IIRC.

Their drivers, or that which is supplied with linux?

My experience with their drivers has been (and again its dated info as I 
don't fix whats not broken) that I usually had to re-install to restore 
any function at all.  Slightly better with nvidia drivers, but TBT, 
where I've an nvidia card, nouveau is actually working quite well for me 
and has been for a couple years now.  One thing I cannot tolerate, is 
the nvidia drivers locking out the IRQ's for up to 200 millisecods at a 
time since even when the machines stepper motor drivers have been 
replaced with dedicated hardware so I don't have to worry about a delay 
in a 25 microsecond basic software loop thread, the servo loop thread is 
still needed at nominally 1 millisecond intervals, and having the IRQ's 
locked out for periods that exceed that millisecond can and will be 
dangerous to the usability of the parts the machine is busy carving. You 
can't usually hear the machine stop for that time, but the marks on the 
work are the clue you have a problem because the spindle still spins the 
cutter when one of those microscopic pauses happens.  The i915 driver 
doesn't do that, and the nouveau driver doesn't.  But its taken me years 
to deduce that.  And it could (and possibly will) change before the week 
is over. :(  Those of us actually running RTAI patched kernels to get 
that sort of performance are an ignorable minority of perhaps .002% of 
the linux users.  Probably under 2500 planet wide but no one knows, its 
free software.

Cheers, Gene Heskett
-- 
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