RaumTrug
April 12th, 2012, 05:59 PM
Hello there!
As the title suggests, I've got problems regarding the use of fglrx and jackd. My current system is Xubuntu 11.10 64 bits, with radeon hd 6670, fglrx installed with jockey.
Now, using onboard sound and the free radeon driver, I can easily operate jack at -n128 -p2, no xruns. When I try the same with fglrx installed, I get constant x-runs raining in at medium rate, it gets worse when I do anything that might run graphics bus usage or like that, like opening/moving windows, scrolling etc...as said, with radeon driver: no pain at all. With fglrx, the xrun-**** happen even at very high latencies, like 2048 frames/period, though less often then.
I've tried the "threadirqs" bootoption, & chrt the interrupts of soundchip and rtc in the 80's - no difference! Using Jack2 in synchronous mode with "-S" option, using Jack1, ...
Now where you kick in: to prevent having to have a second ubuntu installation just for running stuff that needs jackd, what else could I do, in order to be able to use fglrx capas (opengl 4 rocks!) and jackd at low latencies x-run free?
any ideas welcome, however hacky they might be! ...and yes, I know people recommend not using proprietary drivers for realtime audio, but I want to do realtime music/audio visualizations somewhere in near future, and radeon's opengl 2.1 sucks...
As the title suggests, I've got problems regarding the use of fglrx and jackd. My current system is Xubuntu 11.10 64 bits, with radeon hd 6670, fglrx installed with jockey.
Now, using onboard sound and the free radeon driver, I can easily operate jack at -n128 -p2, no xruns. When I try the same with fglrx installed, I get constant x-runs raining in at medium rate, it gets worse when I do anything that might run graphics bus usage or like that, like opening/moving windows, scrolling etc...as said, with radeon driver: no pain at all. With fglrx, the xrun-**** happen even at very high latencies, like 2048 frames/period, though less often then.
I've tried the "threadirqs" bootoption, & chrt the interrupts of soundchip and rtc in the 80's - no difference! Using Jack2 in synchronous mode with "-S" option, using Jack1, ...
Now where you kick in: to prevent having to have a second ubuntu installation just for running stuff that needs jackd, what else could I do, in order to be able to use fglrx capas (opengl 4 rocks!) and jackd at low latencies x-run free?
any ideas welcome, however hacky they might be! ...and yes, I know people recommend not using proprietary drivers for realtime audio, but I want to do realtime music/audio visualizations somewhere in near future, and radeon's opengl 2.1 sucks...