Artifacts and slow VM

[Roberto Reale <ro...@trueability.com>]

I can connect to the VM, but it's extremely slow and has some weird
artifacts on the screen.

Did anybody else experience this? Is there anything else beyond bad
internet connection or cluster (where the VM is) slowness that can cause
this?

This was working well until a month ago and suddenly it started being
extremely slow.

Re: Artifacts and slow VM

[Nick Couchman <vn...@apache.org>]

On Tue, Sep 16, 2025 at 2:33 AM Roberto Reale <ro...@trueability.com>
wrote:

> I realized that I accidentally upgraded Guacamole to version 1.6.0 because
> I was referencing the untagged Guacamole image in my helm charts.
> Downgrading to version 1.5.5 solved all my problems: no more artifacts and
> no more slow response.
>
> For reference:
>
>    - the Guacamole version affected is 1.6.0
>    - I was connecting via RDP
>    - Every VM provisioned (we do this dynamically) had the problem (Linux
>    + Xfce)
>    - We host these on k8s on a self managed cluster, the nodes had plenty
>    of overhead
>
> Thank you.
>
>
Hello, Roberto,
Thank you for providing that additional detail. If you have a moment to
test on 1.6.0, could you try disabling Graphics Pipeline in the connection
parameters and see if that makes any difference at all?

-Nick

Re: Artifacts and slow VM

[Roberto Reale <ro...@trueability.com>]

I realized that I accidentally upgraded Guacamole to version 1.6.0 because
I was referencing the untagged Guacamole image in my helm charts.
Downgrading to version 1.5.5 solved all my problems: no more artifacts and
no more slow response.

For reference:

   - the Guacamole version affected is 1.6.0
   - I was connecting via RDP
   - Every VM provisioned (we do this dynamically) had the problem (Linux +
   Xfce)
   - We host these on k8s on a self managed cluster, the nodes had plenty
   of overhead

Thank you.



On Tue, Sep 16, 2025 at 12:15 AM, Nick Couchman <vn...@apache.org> wrote:

> On Mon, Sep 15, 2025 at 11:11 AM Roberto Reale <ro...@trueability.com>
> wrote:
>
> I can connect to the VM, but it's extremely slow and has some weird
> artifacts on the screen.
>
>
> What version of Guacamole? From the screenshot it looks like you're
> connecting to XFCE - is that over VNC, or RDP? Does it happen with multiple
> systems, or just a single connection?
>
>
> Did anybody else experience this? Is there anything else beyond bad
> internet connection or cluster (where the VM is) slowness that can cause
> this?
>
>
> You can check load on the various systems - the target, the system running
> guacd, and the system running Tomcat (guacamole-client), and make sure
> there aren't any issues on those.
>
>
>
> This was working well until a month ago and suddenly it started being
> extremely slow.
>
>
> When you say "suddenly," do you mean that there were no changes to the
> environment - the environment stayed the same (same Guacamole version, same
> configuration of components, etc.), but it started behaving this way?
>
> -Nick
>

Re: Artifacts and slow VM

[Nick Couchman <vn...@apache.org>]

On Mon, Sep 15, 2025 at 11:11 AM Roberto Reale <ro...@trueability.com>
wrote:

> I can connect to the VM, but it's extremely slow and has some weird
> artifacts on the screen.
>
>
What version of Guacamole? From the screenshot it looks like you're
connecting to XFCE - is that over VNC, or RDP? Does it happen with multiple
systems, or just a single connection?


> Did anybody else experience this? Is there anything else beyond bad
> internet connection or cluster (where the VM is) slowness that can cause
> this?
>
>
You can check load on the various systems - the target, the system running
guacd, and the system running Tomcat (guacamole-client), and make sure
there aren't any issues on those.



> This was working well until a month ago and suddenly it started being
> extremely slow.
>

When you say "suddenly," do you mean that there were no changes to the
environment - the environment stayed the same (same Guacamole version, same
configuration of components, etc.), but it started behaving this way?

-Nick

>