> >Please look up the bConfigurationValue for your device
> >in sysfs.
I didn't explicitly say that this was done under kernel-4.7.4, otherwise
it may have been impossible under 4.8 .
On Thu, Sep 22, 2016 at 04:40:50PM +0200, Oliver Neukum wrote:
> OK. Strange. Please do
> dmesg -c
> echo 9 > /proc/sysrq-trigger
> modprobe cdc_acm
> echo "module cdc_acm +mpf" > /sys/kernel/debug/dynamic_debug/control
> [plug your device in]
> and provide the full output of dmesg after that.
You don't state if this must be done in a safe 4.7.4 or a crashable 4.8.
(if I get that far to retrieve dmesg to a file).
Anyway, echo "module cdc_acm +mpf" > /sys/kernel/debug/dynamic_debug/control
results in 'No such file or directory' because there is no 'dynamic_debug'.
The kernel option DYNAMIC_DEBUG was not set.
A new kernel is compiling now..
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