Slow / intermittent response from LIRC

mjman · n00b Joined: 24 Nov 2005 Posts: 18

Hi,

I am having issues with lirc on gentoo (2.6.13-r5 and 2.6.14-r2, lirc versions 0.7.2 and 0.8.0-pre1 respectively). This is with a Hauppauge PVR-350 IR receiver (lirc-i2c driver). If I run irw before starting X (xorg-6.8.2-r6), then all is well. However, as soon as I start X, lirc becomes very unresponsive and only about 1 in 10 signals is received and printed by irw. This makes it pretty much unusable.

Furthermore, if I then kill X, lirc continues to be unresponsive, requiring a reboot to fix the problem.

I know that it is not a problem with my window manager, but with X itself, because it happens even when I don't run anything on top of X.

Does anyone know why this could be happening, or what diagnositcs I could use to figure this out?

Thanks!

anxt · Posted: Wed Nov 30, 2005 8:45 am Post subject:

Just as a shot in the dark are you try to use the ivtv-fb too?

i had such horendous problems with my 350 tv out i returned it and got a 500mce

aparently there is a ticket for this on the new ivtv driver(for fb problems, i was getting my logs flooded with DMA errors, and omigosh it was horendous back in the day on my old via (kt600 kt880) chipsets.

iirc ivtv must be loaded for the ir to work. personally i have been using an old jetway ir thingy that hooks to the serial port, as with my luck my tv responds to my hauppauge remote and does weird umm, shall we say ... poop.

umm after all that disjointed typing, what does dmesg say?

mjman · n00b Joined: 24 Nov 2005 Posts: 18

Heh... I too had horrible results with the ivtv-fb driver in the past. The main problem is that the hauppauge chipset does not support the xv driver, so watching avi movies is choppy.
Anyways, I switched to using the TV-out on my nvidia card long ago.

As it turns out, the problem does not only live in X-windows, but it seems to happen all the time, X or no X. There is nothing interesting to report from dmesg.

Any ideas? I've already tried using several different versions of ivtv, lirc, and the kernel itself, to no avail...

Funny thing is, I used to run this box on Fedora Core 4, with no such problems... I switched to gentoo because it is far superior, but this problem might send me back if I can't figure it out.

anxt · Posted: Fri Dec 09, 2005 9:24 am Post subject:

i think this is supposed to be fixed in the latest ivtv drivers. i rma'd my pvr-350 a while ago as i now use the component out on my 6200 for tv out to my hdtv

mjman · n00b Joined: 24 Nov 2005 Posts: 18

Thanks for your help. I actually found the problem and fixed it a little while ago.

I had the BTTV driver enabled in the kernel (not really sure why i did that in the first place). Somehow, this driver was interfering with IVTV's communication with I2C.
It's all good now.

trilexx · Posted: Thu Feb 16, 2006 9:32 am Post subject:

as far as I know this option has to be set, otherwise the ivtv modules will NOT compile. and if you remove it afterwards, you will have no tuner.

but I do have the same problems as you, concerning lirc.
_________________
if it lives, compile it

trilexx · Posted: Thu Feb 16, 2006 9:45 am Post subject:

if I build bt848 support as module, everything works fine

ivtv, and lirc should work fine!

_________________
if it lives, compile it

scottd34 · Posted: Fri Oct 06, 2006 1:13 am Post subject:

Just want to add that this worked for me. IVTV 0.7.0 and gentoo-sources 2.6.17-r4, mythtv 0.20
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Main ~ AMD64 3400+, NVIDIA 7600GS, 1gb ram
MythTV ~ Athlon 2500+ Barton, 512mb ram, 300 gb hdd, gentoo
Firewall ~ via epia m6000 fanless, 256MB Ram, Smoothwall