Re: acm/ttyACM0/cdc_acm does not deliver data
From: AW
Date: Sat Oct 08 2011 - 19:07:24 EST
I tried a vanilla kernel now (built from the fedora SRPM after some help by Piotr H....)...
The command that works on the vanilla kernel (_and_ on the official fc15 kernel) looks to usbmon on the vanilla kernel like this:
http://www.wgboome.org/cmd:P-C,2.6.40.6-0.local.fc15.x86_64.usbmon
(the command "P C" switches receive/send-roles much faster (i guess: less than 1msec) than the command "Z L 0" (I guess 50msec); during that time interrupts r disabled and the ATtiny doesnt care for USB things... *blush* but why did the "old" USB subsystem didnt complain about it? and what about my professional DVB-T USB sticks?)
On the vanilla kernel the command "Z L 0" doesnt work as before:
http://www.wgboome.org/cmd:Z-L-0,2nd-try,2.6.40.6-0.local.fc15.x86_64.usbmon
-arne
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