On Tue, Nov 16, 2021 at 03:04:56PM +0100, Marc SCHAEFER wrote:
First, reading documentation, I thought that this would not be possible with USB and only with the internal serial port [1], but then, reading kernel source, it looks it should work with my adapter:
Oct 11 14:30:56 apu2-init7 kernel: [ 9.915105] usb 2-2: pl2303 converter now attached to ttyUSB0
since the driver [2] contains code for magic sysrq, see line 993 for sysrq mode and line 892 for break handling, with implementation in [3] (lines 589-597).
I am running Debian buster kernel 4.19.0-18-amd64 on the apu2.
Should I abandon all hope to make it work with USB, or should it work?
Thank your for any pointers.
Do you have console=ttyUSB0,... set? What does /proc/consoles say? -- Valentin