> > > > On Thu, Aug 6, 2020 at 5:36 AM Stuart Henderson <s...@spacehopper.org> > wrote: > >> On 2020/08/06 00:40, Archimedes Gaviola wrote: >> > Is there a way to have verbose USB messages in the dmesg? because I >> want to >> >> You can build a kernel with "option USB_DEBUG" in kernel config >> (e.g. /sys/arch/arm64/conf/GENERIC.MP). > > > Great! Thank you Stuart, I'll try it out. >
Hi Stuart, I am able to re-compile the kernel with this "option USB_DEBUG" however it's still the same USB dmesg output. I am looking at some knobs in the sysctl but do not have any tunables pertaining to USB. Sharing the behavior of my A4Tech KL-5 mini keyboard (20mA) , the one that works, I just observe sometimes when switching from the default X Window to a tty console. It will be disconnected from wsdisplay0 and detached from wskbd0, ukbd0, uhidev0, uhid0, uhid1? The same is true with my USB barcode scanner (though at the moment this device is only detected and powered-up) when I scan some barcode over an item though it fails to reflect scanned numeric codes in the tty console but the observation is the same with the keyboard. Any hint or clue pertaining this behavior? By the way, the barcode scanner behaves the same with the numeric keypad extension of a keyboard that when you type series of numbers it will reflect in the console. 1. A4Tech USB keyboard (dmesg output) uhidev0 at uhub1 port 3 configuration 1 interface 0 "USB Adapter USB Device" rev 1.10/0.01 addr 4 uhidev0: iclass 3/1 ukbd0 at uhidev0: 8 variable keys, 6 key codes wskbd0 at ukbd0 mux 1 wskbd0: connecting to wsdisplay0 uhidev1 at uhub1 port 2 configuration 1 interface 0 "SIGMACHIP USB Keyboard" rev 1.10/1.10 addr 5 uhidev1: iclass 3/1 ukbd1 at uhidev1: 8 variable keys, 6 key codes wskbd1 at ukbd1 mux 1 wskbd1: connecting to wsdisplay0 uhidev2 at uhub1 port 2 configuration 1 interface 1 "SIGMACHIP USB Keyboard" rev 1.10/1.10 addr 5 uhidev2: iclass 3/0, 2 report ids uhid0 at uhidev2 reportid 1: input=2, output=0, feature=0 uhid1 at uhidev2 reportid 2: input=1, output=0, feature=0 wskbd1: disconnecting from wsdisplay0 wskbd1 detached ukbd1 detached uhidev1 detached uhid0 detached uhid1 detached uhidev2 detached uhidev1 at uhub1 port 2 configuration 1 interface 0 "SIGMACHIP USB Keyboard" rev 1.10/1.10 addr 5 uhidev1: iclass 3/1 ukbd1 at uhidev1: 8 variable keys, 6 key codes wskbd1 at ukbd1 mux 1 wskbd1: connecting to wsdisplay0 uhidev2 at uhub1 port 2 configuration 1 interface 1 "SIGMACHIP USB Keyboard" rev 1.10/1.10 addr 5 uhidev2: iclass 3/0, 2 report ids uhid0 at uhidev2 reportid 1: input=2, output=0, feature=0 uhid1 at uhidev2 reportid 2: input=1, output=0, feature=0 2. USB barcode scanner (dmesg output) uhidev0 at uhub1 port 3 configuration 1 interface 0 "USB Adapter USB Device" rev 1.10/0.01 addr 4 uhidev0: iclass 3/1 ukbd0 at uhidev0: 8 variable keys, 6 key codes wskbd0 at ukbd0 mux 1 wskbd0: connecting to wsdisplay0 wskbd0: disconnecting from wsdisplay0 wskbd0 detached ukbd0 detached uhidev0 detached uhidev0 at uhub1 port 3 configuration 1 interface 0 "USB Adapter USB Device" rev 1.10/0.01 addr 4 uhidev0: iclass 3/1 ukbd0 at uhidev0: 8 variable keys, 6 key codes wskbd0 at ukbd0 mux 1 wskbd0: connecting to wsdisplay0 Thanks and best regards, Archimedes > >> >> -- > Archimedes Gaviola >
