That will be because I wasn't very clear so my apologies. It's part of
qemu, and a very useful way of passing kb+m to and from your host and a
passthrough context. You can search this list for input-linux but the
scripty bit I use to pass it through looks as follows. Got some script
that digs through /sys/class/input to find my keyboard as I have a
corsair keyboard with lights, but you can probably just find your in
/dev/input and replace the ${ev} below. I need the virtio devices (there
are win drivers in the Fedora driver iso) to prevent problems with key
ups during games.
OPTS="$OPTS -object input-linux,id=kbd,evdev=${ev},grab_all=yes,repeat=off"
OPTS="$OPTS -object
input-linux,id=mse,evdev=/dev/input/by-id/usb-Areson_USB_Device-event-mouse
"
OPTS="$OPTS -device
virtio-keyboard-pci,addr=1d.0,multifunction=on,serial=SN0000 "
OPTS="$OPTS -device
virtio-mouse-pci,addr=1d.1,multifunction=on,serial=SN15471500079 "
I think it's criminally underappreciated and underdocumented in qemu but
maybe that's just me. It's been in qemu since 2.7 I think so won't work
with older versions. Switch contexts by pressing both ctrl keys so
easily worked into however you change the screen too.
Regards,
Dan Oram.
//
On 20/03/17 16:16, Patrick O'Callaghan wrote:
On 20 March 2017 at 12:36, Daniel Oram <[email protected]
<mailto:[email protected]>> wrote:
Try ddcutil
http://www.ddcutil.com/
Much more comprehensive. Using something like:
sudo modprobe i2c-dev
sudo ddcutil capabilities
To list any standard recognised capabilities for your monitor (it
is up to date). You may have it but vpd may not be standardised
and ddcutil gives you the tools to work that out if you have the
patience.
I bought a KVM in the end ... and it's so awful I only use it as
an HDMI switch and use the input-linux framework in qemu to switch
the keyboard/mouse. USB switches do work, but only good ones will
work with every device and udev can make a mess of rapidly
switching devices in and out, especially if they have some sort of
custom software as the device won't come back to the same location
as it left. In Windows a mess is normal but it will probably get
worse. HDMI switches may have limitations on max resolution,
bandwidth and types of data so be careful when buying.
/
The input-linux framework can have the odd problem with missed key
ups but they are all easily surmountable by attaching a USB or
virtio keyboard device to the VM so are far preferable to hardware
related limitations or problems of the switch and constant device
plugging in the VMs. After all, that is one of the major
motivations for using a VM.
Thanks, I'll look at that.
What do you mean exactly by "the input-linux framework"? I'm an old
Linux hand but some of this stuff is new to me. Maybe it's just a
question of terminology.
poc
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