On 2020-06-07, Switch 1024 <switch1024@gmail.com> wrote:
> Hi,
>
> I have a Ultimate Hacking Keyboard [1] and it seems to prevent my
> lenovo X1 Carbon 4th gen. from suspending and hibernating.
>
> Sometimes it works, but more often than not, the power led flashes
> rapidly, the displays turn off, hdmi cuts out, the fan starts up and
> thats it.
Not entirely dissimilar to what happens most of the time when you run
halt/reboot on an x260.
> after quite some time i found that I can make the machine reliable
> suspend if I disconnect the usb keyboard before executing zzz.
It's probably worth writing this up for bugs@ (at least include dmesg
and lsusb -v). Not sure if anyone will have an idea what to do, but there's
a higher chance of it being seen by someone with the right knowledge there
than here on misc@.
> I am wondering if there is a command with which I can poweroff the
> keyboard in /etc/apm/suspend?
There isn't. Maybe you could at least sleep until the keyboard is
unplugged though?
while usbdevs | grep "somestring"; do sleep 1; done
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