[haiku-bugs] Re: [Haiku] #14581: no audio on T410 (8086/3b56) - mixer not used (DMA/IRQ problem?)
- From: "Haiku" <trac@xxxxxxxxxxxx>
- To: undisclosed-recipients: ;
- Date: Thu, 27 Dec 2018 10:07:56 -0000
#14581: no audio on T410 (8086/3b56) - mixer not used (DMA/IRQ problem?)
---------------------------------+----------------------------
Reporter: ttcoder | Owner: korli
Type: bug | Status: new
Priority: normal | Milestone: R1/beta2
Component: Drivers/Audio/HDA | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by ttcoder):
DMA snooping differs:
This is a huge difference. The driver is supposed to enable or disable
this based on your device ID; it shouldn't be different across reboots
with the same driver!
Well yet here we are... The archived syslog was captured when I started
working on this ticket with gcc2-32bit, it should be a reliable data
point. As to the snooping=yes part, I now get it at every single boot of
x64 (tried again once more after the two edits above), so pretty darn
reliable too. I'll try booting in 32-bit haiku today to check.
day 2: cold boot R1/b1 x64; launch MediaPlayer after uptime of 50 s.
=> no audio
day 2, checked again after 1h40 uptime: audio works! (nice easter egg
in the Haiku About Box when left open BTW)
Wow, that's ... really, really weird. I guess I should test with my
laptop to see if the same is true here. I wonder what could be going on in
the HDA driver to cause this?
Actually, not at all -- by which I mean it's consistent with past
experience, not that it's a desirable behavior ;-). Ever since I started
using Haiku (is that 6 years?) I've had problems with media_server
remaining silent for the first few minutes, on most machines I've ever
used. Dane also had me add a "5 seconds delay after commandcenter
autostart" some time back, so as to not disturb media_server after a
reboot or it'd remain silent. First time I see this phenomenon last for 40
minutes or some such though (still didn't finish "bracketing" the delay
yet). I always pinned it on media_server rather than HDA, what with the
complex BBuffer code and all. Could be wrong.
I believe the most logical course of action at this point is...
- close this ticket as not-reproducible, since my laptop got "unbricked"
in some mysterious and unfathomable way, so there's no more HDA driver
work that's possible on it at this point; maybe someone who wants to work
on the peer X220 ticket can pick up where I left with my zip-of-goodness
above.. Or tidux can run the OpenBSD driver on his X220 in case it has the
same 'magical' effect it had on my laptop :-).. If my laptop ever gets
"bricked" (probably too strong a word) again I would re-open this. Maybe I
should try to not only power it off but also unplug it from mains and
remove the battery..
- gather more data about that "media_server silent for minutes after boot
up" bug that's been there for some time.
--
Ticket URL: <
https://dev.haiku-os.org/ticket/14581#comment:16>
Haiku <
https://dev.haiku-os.org>
The Haiku operating system.
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