When connecting SSVNC 1.0.29-2+b2 viewer (Debian x86_64) to UltraVNC 1.2.1.0 server (Windows 7 x86_64), i get display corruption, usually around mouse cursor (but sometimes in other parts of the screen).
Corruption looks like small blocks of black or white pixels or thin-ish lines of black pixels.
Corruption becomes less prevalent with the increase of the "Compression" option in SSVNC, although i'm not sure how it corresponds to UltraVNC options.
Does no happen when UltraVNC viewer is used.
Did not happen in 1.2.0.6 (haven't tried 1.2.0.9, went straight to 1.2.1.0).
I have video (400KB), if you want it.
After more 2 000 000 (two million) views on forum for 1.5.0.x development versions... and 1.6.1.0, 1.6.3.0-dev versions
A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
There was a problem to vote, it is solved now! Thanks in advance!
2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page
2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
There was a problem to vote, it is solved now! Thanks in advance!
2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page
2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078
2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
Corrupted visuals in SSVNC viewer
Re: Corrupted visuals in SSVNC viewer
Click the connections options - uncheck the "scale server to window"
That helped me with the corruption.
Is there a way to turn the scaling to window off?
That helped me with the corruption.
Is there a way to turn the scaling to window off?
Re: Corrupted visuals in SSVNC viewer
There's no "connections options" to click in SSVNC viewer. It does have a viewer options window though, available by pressing F8.
Nevertheless, i didn't have anything to lose by trying to follow your advice, however unlikely it seemed at the time.
So i did F8->Scale viewer->auto
That screwed up the display in a very expected way (desktop aspect ratio did not match the laptop aspect ratio), but there was no obvious corruption around mouse cursor.
Then i did F8->Scale viewer->1.0
And it went back to the way it looked before - but this time there was no corruption.
So yeah, this kind of works. I wonder why.
Nevertheless, i didn't have anything to lose by trying to follow your advice, however unlikely it seemed at the time.
So i did F8->Scale viewer->auto
That screwed up the display in a very expected way (desktop aspect ratio did not match the laptop aspect ratio), but there was no obvious corruption around mouse cursor.
Then i did F8->Scale viewer->1.0
And it went back to the way it looked before - but this time there was no corruption.
So yeah, this kind of works. I wonder why.
