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https://issues.apache.org/jira/browse/GUACAMOLE-1285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mike Jumper closed GUACAMOLE-1285.
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Resolution: Invalid
> Poor rendering over VNC
> -----------------------
>
> Key: GUACAMOLE-1285
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-1285
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole
> Affects Versions: 1.0.0, 1.3.0
> Environment: OS: Linux, Windows; Browsers: Chrome, Opera
> Reporter: Gareth Somerville
> Priority: Minor
> Attachments: image (5).png, image (6).png, image (7).png, image
> (8).png
>
>
> We currently use Guacamole to display a VNC connection from a remote Chromium
> browser running at 1920x1800 full screen.
> We began getting complaints from users in mid-late September about the
> display appearing 'blurry', and upon investigation found that this appeared
> to be that some UI elements are rendering incorrectly as shown below - this
> is most noticeable with text and causes difficulties reading, particularly at
> smaller font sizes.
> !image (5).png! !image (6).png!
> After looking for solutions, we have found that some (but not all) users have
> seen this go away when displaying the Guacamole display at full screen on a
> screen greater than or equal to 1920x1800. A more reliable, but more invasive
> fix is to disable hardware acceleration in the browser. This seems to solve
> the problem for any user that raises the issue. Below is a comparison with
> the above after disabling hardware acceleration.
> !image (7).png! !image (8).png!
> We haven't had any reports of this issue in browsers using other rendering
> engines (i.e. Firefox), so this implies that an update to that engine is what
> caused the issue. I haven't been able to narrow this down for sure, but it
> could be version 86 of Chrome where this was introduced. Due to the nature of
> the issue, it could also be related to drivers, but we have seen reports on
> both Windows and Linux, so I'm inclined to think it is the rendering engine.
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