On 2017-02-06 14:03, Bjoern Voigt wrote:
Since two month I own a WinTV soloHD television USB stick. The chipset is em28178, which is supported by the kernel modules em28xx, em28xx_dvb and em28xx_rc. I tested different kernels, now 4.9.8-1.gaf90696-default from Kernel_stable repository.
The card works perfectly, but often the Kernel crashes if the device is unplugged.
Unfortunately I can't see any OOPS message, if the system freezes during unplugging. Is there any trick to get the Kernel messages, so that I can write a Kernel bug report?
Well, the first thing to try is to switch to text mode (ctrl-alt-F10) to see the log there, and then attempt to unplug the device. Hopefully you get some messages and can take a photo with a camera. If you have a real hardware serial port (rs232) you can tell the kernel to dump messages there, and capture them on another computer; this one may use an usb-rs232 converter. If not, another method is to tell the kernel to send the message via ethernet port to another computer in the LAN. If you are going to use any of that, I can try dig out my notes and give you more info. I have done both methods, but not recently. It is not point and shoot, unfortunately. -- Cheers / Saludos, Carlos E. R. (from 42.2 x86_64 "Malachite" at Telcontar)