CPU/Temperature

[adrixo]

My system goes out of control (mergeinputs appears at the top of htop with high cpu usage) when I disconnect and reconnect my laptol keyboard.

    PID USUARIO   PR  NI    VIRT    RES    SHR S  %CPU  %MEM     HORA+ ORDEN                                                                                                                                                                  
   2255 root      20   0   35556    944    856 S 299,3   0,0   3:25.29 mergeinputs             

Of course, this problem is temporarily solved with:

sudo systemctl restart mergeinputs

[adrixo]

dmesg output after disconnect/connect the usb when the systemd service is running

[ 8553.812801] usb 1-6: USB disconnect, device number 7
[ 8553.812807] usb 1-6.2: USB disconnect, device number 8
[ 8553.812811] usb 1-6.2.3: USB disconnect, device number 10
[ 8554.231965] usb 1-6.3: USB disconnect, device number 9
[ 8556.948297] usb 1-6: new high-speed USB device number 11 using xhci_hcd
[ 8557.101411] usb 1-6: New USB device found, idVendor=05e3, idProduct=0608, bcdDevice=85.36
[ 8557.101418] usb 1-6: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 8557.101422] usb 1-6: Product: USB2.0 Hub
[ 8557.102883] hub 1-6:1.0: USB hub found
[ 8557.103131] hub 1-6:1.0: 4 ports detected
[ 8557.392300] usb 1-6.2: new high-speed USB device number 12 using xhci_hcd
[ 8557.497396] usb 1-6.2: New USB device found, idVendor=05e3, idProduct=0608, bcdDevice=85.36
[ 8557.497404] usb 1-6.2: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[ 8557.497407] usb 1-6.2: Product: USB2.0 Hub
[ 8557.498945] hub 1-6.2:1.0: USB hub found
[ 8557.499207] hub 1-6.2:1.0: 4 ports detected
[ 8557.588356] usb 1-6.3: new low-speed USB device number 13 using xhci_hcd
[ 8557.692680] usb 1-6.3: New USB device found, idVendor=0911, idProduct=2188, bcdDevice= 0.01
[ 8557.692686] usb 1-6.3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 8557.702661] input: HID 0911:2188 as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.3/1-6.3:1.0/0003:0911:2188.001F/input/input105
[ 8557.764664] hid-generic 0003:0911:2188.001F: input,hidraw7: USB HID v1.01 Keyboard [HID 0911:2188] on usb-0000:00:14.0-6.3/input0
[ 8557.772312] input: HID 0911:2188 Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.3/1-6.3:1.1/0003:0911:2188.0020/input/input106
[ 8557.800289] usb 1-6.2.3: new low-speed USB device number 14 using xhci_hcd
[ 8557.832436] input: HID 0911:2188 System Control as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.3/1-6.3:1.1/0003:0911:2188.0020/input/input107
[ 8557.832765] input: HID 0911:2188 Consumer Control as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.3/1-6.3:1.1/0003:0911:2188.0020/input/input108
[ 8557.832831] input: HID 0911:2188 Wireless Radio Control as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.3/1-6.3:1.1/0003:0911:2188.0020/input/input109
[ 8557.832928] hid-generic 0003:0911:2188.0020: input,hiddev3,hidraw8: USB HID v1.01 Mouse [HID 0911:2188] on usb-0000:00:14.0-6.3/input1
[ 8557.913516] usb 1-6.2.3: New USB device found, idVendor=0911, idProduct=2188, bcdDevice=10.01
[ 8557.913520] usb 1-6.2.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 8557.913522] usb 1-6.2.3: Product: USB Keyboard
[ 8557.913523] usb 1-6.2.3: Manufacturer: Hantick
[ 8557.913525] usb 1-6.2.3: SerialNumber: HID Composite device
[ 8557.925515] input: Hantick USB Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.2/1-6.2.3/1-6.2.3:1.0/0003:0911:2188.0021/input/input110
[ 8557.984619] hid-generic 0003:0911:2188.0021: input,hidraw9: USB HID v1.01 Keyboard [Hantick USB Keyboard] on usb-0000:00:14.0-6.2.3/input0
[ 8557.994212] input: Hantick USB Keyboard Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.2/1-6.2.3/1-6.2.3:1.1/0003:0911:2188.0022/input/input111
[ 8557.994340] input: Hantick USB Keyboard System Control as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.2/1-6.2.3/1-6.2.3:1.1/0003:0911:2188.0022/input/input112
[ 8558.056421] input: Hantick USB Keyboard Consumer Control as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.2/1-6.2.3/1-6.2.3:1.1/0003:0911:2188.0022/input/input113
[ 8558.056508] input: Hantick USB Keyboard Wireless Radio Control as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6.2/1-6.2.3/1-6.2.3:1.1/0003:0911:2188.0022/input/input114
[ 8558.056624] hid-generic 0003:0911:2188.0022: input,hiddev4,hidraw10: USB HID v1.01 Mouse [Hantick USB Keyboard] on usb-0000:00:14.0-6.2.3/input1

[Ckath]

all this does is just take devices and redirect the output, there is no disconnect/reconnect handling at all. you can only hope it crashes instead of getting stuck on reading it, which is what probably happened in your case.
there are a couple solutions here

• make something that calls a restart on mergeinputs whenever you plug in a keyboard, probably doable through udev rules
• wait for me to get around to implementing this case properly, which is going to take a while if ever
• inbetween solution where I at least try to make mergeinputs quit when something disconnects, could probably figure something out for this short term

[chrisduerr]

wait for me to get around to implementing this case properly, which is going to take a while if ever

Please don't fix this, it would break my workflow. Since my control key is hard to reach, I just unplug and replug my keyboard instead and configured emacs to interpret a rapid CPU temperature rise as control.