On 9/29/19 7:12 PM, 'Micah Lee' via qubes-users wrote:
On 2019-09-24 18:21, Michael Siepmann wrote:I've read and followed the instructions on https://www.qubes-os.org/doc/gui-configuration/ but the problem I'm having is different. Here's what happens:1. I'm using VMs on a 4K monitor successfully, via DisplayPort. 2a. I have Dom0 screensaver set to Blank Screen Only and it blanks after the configured number of minutes OR 2b. I switch to using the laptop screen, then back to the 4K monitor OR 2c. The computer wakes from sleep while the 4K monitor is in power saving mode. 3. I can no longer click the mouse in my VMs (though it seems as if maybe all clicks register in a very small area at the top left). The mouse works normally in dom0. 4. If I switch to the laptop internal screen it works fine there, but if I switch back to the 4K monitor it still doesn't work there. The only way to get mouse clicking working in the VMs again is to shut down the VM and restart it while using the 4K monitor. The same thing happens if the computer goes to sleep and when I wake it up the monitor is in power saving mode. My current workaround is to disable the screensaver, and remember to wake the monitor before waking the computer, Is this a bug I should report? Has anyone else encountered this behavior?I've encountered this bug (or a similar one) as well on a 4K monitor. It appears that the mouse clicks only register if they're within the top left width and height of the laptop resolution. A workaround I've discovered is just restarting your VMs while your 4K monitor is plugged in. If you start a VM with the monitor plugged in, it lets you click anyone on the monitor within that VM.
You can also try to switch to a tty (e.g. Alt+Ctl+F2), wait a few seconds and then go back (Alt+Ctl+F1). Works for me whenever I have issues with external monitors.
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