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TigerVNC / tigervnc

High performance, multi-platform VNC client and server
https://tigervnc.org
GNU General Public License v2.0
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vnc viewer keeps black until moving or dragging the viewer window #1805

Open chiefliu opened 1 month ago

chiefliu commented 1 month ago

Describe the bug

TigerVnc version : image image

I tried two versions fo TigerVnc. When i use tigervnc on windows10 LTSC to connect an Linux based on ubuntu and try to start an app
when the desktop is started . An turbovnc server （v3.0.3） is running on the linux，when connected the command line is on the linux :

/opt/TurboVNC/bin/Xvnc :1 -desktop TurboVNC: appbox:1 (root) -auth /root/.Xauthority -geometry 1240x900 -depth 24 -rfbwait 120000 -x509cert /root/.vnc/x509_cert.pem -x509key /root/.vn/x509_private.pem -securitytypes none -rfbport 30009 -fp catalogue:/etc/X11/fontpath.d -deferupdate 1 -dridir /usr/lib64/dri -registrydir /usr/lib64/xorg -nocursor -noclipboardrecv -noclipboardsend

It seems that the connection is successfully built,but the tigervnc windows keeps black:

image

if i move the tigervnc windows(such as drag the window，min size the max size)，it displays normally:

image

I'm not sure if this is an tigervnc bug or just some compatibility problems. Can you provide some solutions for troubleshooting this issue?

Client: tigernvc 1.14.80 windows10 LTSC windows dpi 1920*1080

server: TurboVnc 3.0.3

Thank you ~

chiefliu commented 1 month ago

I use RealVNC 7.10, it works well

CendioOssman commented 1 month ago

To clarify, is it sufficient to just move the client window? Or do you need to resize it?

chiefliu commented 1 month ago

To clarify, is it sufficient to just move the client window? Or do you need to resize it?

I just make a test, i just moved the window, but the window size is changed. and if i minimize the window and then restore it. It comes to work normally too.

so I think i does not rely on resize?

chiefliu commented 1 month ago

I also found that the vnc viewer has a lot of white areas around the black area before i move it : image

After i move the window, the white areas are disappeared: image

CendioOssman commented 1 month ago

Did you use our builds for TigerVNC 1.14.80 and 1.3.1? Or did you build them yourself?

chiefliu commented 1 month ago

I use your builds, i didn't build it .

chiefliu commented 1 month ago

It works well in most cases except on windows10 LTSC

CendioOssman commented 1 month ago

I'm afraid that makes it almost impossible for us to debug and fix. :/

Does it work from that client to a TigerVNC server?

chiefliu commented 1 month ago

I did not do that test, I consider if this is a compatibility problem : when the vnc viewer is launched, the window size is not adjust correctly and may stuck the vnc viewer's display ? (As my previous screenshots, the vnc viewer window seems abnormal: there is a lot of white blank area)

CendioOssman commented 1 month ago

At this point it is difficult to state if that area comes from the client or the server. Hence why it would be very helpful if you can test with a different server.

noarche commented 2 weeks ago

Mine stays black the whole session. Not sure if it is because I do not have a monitor plugged in or what... Fixed by switching to LAN version of teamviewer free.