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[Bug 1502884] Re: Super important feature req: QEMU VNC server: Introduc
From: |
Marcel Partap |
Subject: |
[Bug 1502884] Re: Super important feature req: QEMU VNC server: Introduce a keyboard "norepeat" option! |
Date: |
Sun, 27 Sep 2020 15:46:47 -0000 |
... this doesn't seem to be a VNC-only issue.. I get quite the big of
repeat/stuck key presses with the GTK frontend as well.. Also, lines
like these frequently show up in the logs:
> [15512.846716] psmouse serio1: VMMouse at isa0060/serio1/input0 lost sync at
> byte 1
> [15513.031586] psmouse serio1: VMMouse at isa0060/serio1/input0 - driver
> resynced.
> [15513.931140] psmouse serio1: VMMouse at isa0060/serio1/input0 lost sync at
> byte 1
> [15513.935319] psmouse serio1: VMMouse at isa0060/serio1/input0 - driver
> resynced.
> [15994.802058] psmouse serio1: VMMouse at isa0060/serio1/input0 lost sync at
> byte 1
> [15994.807817] psmouse serio1: VMMouse at isa0060/serio1/input0 - driver
> resynced.
> [18243.163746] psmouse serio1: VMMouse at isa0060/serio1/input0 lost sync at
> byte 1
> [18243.165704] psmouse serio1: VMMouse at isa0060/serio1/input0 - driver
> resynced.
> [18243.372671] psmouse serio1: VMMouse at isa0060/serio1/input0 lost sync at
> byte 1
> [18243.374203] psmouse serio1: VMMouse at isa0060/serio1/input0 - driver
> resynced.
> [18576.754033] psmouse serio1: VMMouse at isa0060/serio1/input0 lost sync at
> byte 1
> [18576.771257] psmouse serio1: VMMouse at isa0060/serio1/input0 - driver
> resynced.
> [18584.556247] psmouse serio1: VMMouse at isa0060/serio1/input0 lost sync at
> byte 1
> [18585.168172] psmouse serio1: VMMouse at isa0060/serio1/input0 - driver
> resynced.
> [18628.989958] psmouse serio1: VMMouse at isa0060/serio1/input0 lost sync at
> byte 1
> [18628.992058] psmouse serio1: VMMouse at isa0060/serio1/input0 - driver
> resynced.
> [20227.153135] psmouse serio1: VMMouse at isa0060/serio1/input0 lost sync at
> byte 1
> [20227.161066] psmouse serio1: VMMouse at isa0060/serio1/input0 - driver
> resynced.
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https://bugs.launchpad.net/bugs/1502884
Title:
Super important feature req: QEMU VNC server: Introduce a keyboard
"norepeat" option!
Status in QEMU:
New
Bug description:
Hi,
A big issue when using QEMU's VNC server (VNC KVM) is that, when
there's a network lag, unintended keypresses go through to the QEMU
guest VM.
This is frequently "enter" keypresses, causing all kinds of unintended
consequences in the VM. So basically it's extremely dangerous.
This is because the VNC protocol's keyboard interaction is implemented
in terms of key down - key up events, making the server's keyboard
autorepeat kick in when it should not.
For this reason, it would be great if QEMU's VNC server part would be
enhanced with an option such that when a VNC protocol key down is received,
then locally that is treated as one single keypress only (I don't know how that
should be implemented but I guess either as an immediate key down - key up
sequence locally, or key down + key up after say 0.05 seconds), instead of
waiting for the key up event from the VNC client.
Thanks!
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- [Bug 1502884] Re: Super important feature req: QEMU VNC server: Introduce a keyboard "norepeat" option!,
Marcel Partap <=