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Posted to user@guacamole.apache.org by varknar <gu...@nostalgeek.net> on 2021/05/02 07:42:37 UTC

RDP - Can't login : "You have been disconnected"

Hey,

I'm a fan of Guac' and recently built it on my RPi4.  However, unlike my
virtual machine, on Ubuntu 20.04, it is on Raspbian Buster.  I had no issue
on the Ubuntu VM but it wasn't convenient to have a VM on the computer I
need to remote into...if it reboots, the VM couldn't auto-start.

However, the issue is on the Raspberry Pi.  When I try to connect to my
Windows 10 machine on Guacamole hosted there, it connects and immediately
disconnects with "You have been disconnected" on a black background. 
Nothing happens on the Windows machine, but based on eventvwr, the session
has been created and destroyed without errors, the login worked.

Checking syslog, catalina logs, no error spotted - everything seems to work
as normal.  I do some Google-fu and stumble on :

http://apache-guacamole-general-user-mailing-list.2363388.n4.nabble.com/Upgrade-from-0-9-14-to-1-1-0-RDP-now-doesn-t-connect-td8207.html

then

http://apache-guacamole-general-user-mailing-list.2363388.n4.nabble.com/Problems-to-RDP-windows-10-td7565.html

which seemed to absolutely be the same thing, but no, no luck with disabling
WDDM driver (and rebooting) or playing with NLA authentication.  Plug, I
have no segfault or Error 114 spotted in some posts.

Windows 10 is at version 20H2.

Any ideas?  How can I get an error to see what's wrong?

Thank you and have a nice day



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Re: RDP - Can't login : "You have been disconnected"

Posted by varknar <gu...@nostalgeek.net>.
Confirmed that after removing freerdp2 from stable packages and installing
from backports, it works :

After this operation, 2,670 kB disk space will be freed.
Do you want to continue? [Y/n] Y
Get:1 http://deb.debian.org/debian buster-backports/main armhf libwinpr2-dev
armhf 2.3.0+dfsg1-1~bpo10+1 [170 kB]
Get:2 http://deb.debian.org/debian buster-backports/main armhf
libwinpr-tools2-2 armhf 2.3.0+dfsg1-1~bpo10+1 [37.4 kB]
Get:3 http://deb.debian.org/debian buster-backports/main armhf libwinpr2-2
armhf 2.3.0+dfsg1-1~bpo10+1 [289 kB]
Get:4 http://deb.debian.org/debian buster-backports/main armhf libfreerdp2-2
armhf 2.3.0+dfsg1-1~bpo10+1 [506 kB]
Get:5 http://deb.debian.org/debian buster-backports/main armhf
libfreerdp-client2-2 armhf 2.3.0+dfsg1-1~bpo10+1 [272 kB]
Get:6 http://deb.debian.org/debian buster-backports/main armhf
libfreerdp-server2-2 armhf 2.3.0+dfsg1-1~bpo10+1 [106 kB]
Get:7 http://deb.debian.org/debian buster-backports/main armhf
libfreerdp-shadow2-2 armhf 2.3.0+dfsg1-1~bpo10+1 [69.8 kB]
Get:8 http://deb.debian.org/debian buster-backports/main armhf
libfreerdp-shadow-subsystem2-2 armhf 2.3.0+dfsg1-1~bpo10+1 [39.1 kB]
Get:9 http://deb.debian.org/debian buster-backports/main armhf winpr-utils
armhf 2.3.0+dfsg1-1~bpo10+1 [36.4 kB]
Get:10 http://deb.debian.org/debian buster-backports/main armhf freerdp2-dev
armhf 2.3.0+dfsg1-1~bpo10+1 [126 kB]

Thanks again!



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Re: RDP - Can't login : "You have been disconnected"

Posted by Mike Jumper <mi...@glyptodon.com>.
On Sun, May 2, 2021 at 1:48 PM varknar <gu...@nostalgeek.net> wrote:

> Valid point.
>
> *:/usr/lib/arm-linux-gnueabihf $ sudo apt list --installed|grep rdp
>
> WARNING: apt does not have a stable CLI interface. Use with caution in
> scripts.
>
> freerdp2-dev/stable,now 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2 armhf
> [installed]
> libfreerdp-client2-2/stable,now
> 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2
> armhf [installed]
> libfreerdp-server2-2/stable,now
> 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2
> armhf [installed,automatic]
> libfreerdp-shadow-subsystem2-2/stable,now
> 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2 armhf [installed,automatic]
> libfreerdp-shadow2-2/stable,now
> 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2
> armhf [installed,automatic]
> libfreerdp2-2/stable,now 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2 armhf
> [installed]*
>
> So...should look for backports and install one from there?
>

Yep. I don't know whether Raspbian has its own backports repository, but
Debian's "buster-backports" repository has the 2.3.0 release:

https://packages.debian.org/buster-backports/freerdp2-dev

The version you're seeing above ("2.0.0~git20190204.1.2693389a") is the
same as in Debian's "buster" repository, and is a git snapshot taken
sometime between 2.0.0-rc4 and the actual 2.0.0 release:

https://issues.apache.org/jira/browse/GUACAMOLE-1241?focusedCommentId=17253883&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-17253883

Michael Jumper
CEO, Lead Developer
Glyptodon Inc <https://glyp.to/>.

Re: RDP - Can't login : "You have been disconnected"

Posted by varknar <gu...@nostalgeek.net>.
Valid point.

*:/usr/lib/arm-linux-gnueabihf $ sudo apt list --installed|grep rdp

WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.

freerdp2-dev/stable,now 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2 armhf
[installed]
libfreerdp-client2-2/stable,now 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2
armhf [installed]
libfreerdp-server2-2/stable,now 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2
armhf [installed,automatic]
libfreerdp-shadow-subsystem2-2/stable,now
2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2 armhf [installed,automatic]
libfreerdp-shadow2-2/stable,now 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2
armhf [installed,automatic]
libfreerdp2-2/stable,now 2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u2 armhf
[installed]*

So...should look for backports and install one from there?


Mike Jumper-3 wrote
> On Sun, May 2, 2021 at 10:43 AM varknar &lt;

> guacforums@

> &gt; wrote:
> 
>> Thanks for your time!
>>
>> From memory (and my .bash_history), I installed the server part with the
>> tarball (tar.gz) from guacamole.apache.org, version 1.3.0.
>>
>> As for freerdp, based on filenames under /usr/lib/arm-linux-gnueabihf, I
>> am
>> on 2.0.0
>>
> 
> What does the package manager say?
> 
> It's possible that the version of FreeRDP installed in your case is a git
> snapshot, not the actual 2.0.0 release, and that you are running into
> unpredictable memory behavior as a result. I'm not sure about Rasbian, but
> this is the case for Debian - the package in the main buster repos is a
> git
> snapshot, whereas the package in the backports repo is a stable release.
> 
> Also, beware that checking the filename (ideally) does not describe the
> release version. The numbers within the library filename are part of the
> soname, which is supposed to indicate ABI compatibility, not the release.
> It currently matches the release number in FreeRDP's case, but it would
> definitely be a major improvement if it didn't. There's no other way for
> the system linker to know that software was built against an older version
> of the ABI and should not be linked against the newer version.
> 
> Michael Jumper
> CEO, Lead Developer
> Glyptodon Inc &lt;https://glyp.to/&gt;.


Mike Jumper-3 wrote
> On Sun, May 2, 2021 at 10:43 AM varknar &lt;

> guacforums@

> &gt; wrote:
> 
>> Thanks for your time!
>>
>> From memory (and my .bash_history), I installed the server part with the
>> tarball (tar.gz) from guacamole.apache.org, version 1.3.0.
>>
>> As for freerdp, based on filenames under /usr/lib/arm-linux-gnueabihf, I
>> am
>> on 2.0.0
>>
> 
> What does the package manager say?
> 
> It's possible that the version of FreeRDP installed in your case is a git
> snapshot, not the actual 2.0.0 release, and that you are running into
> unpredictable memory behavior as a result. I'm not sure about Rasbian, but
> this is the case for Debian - the package in the main buster repos is a
> git
> snapshot, whereas the package in the backports repo is a stable release.
> 
> Also, beware that checking the filename (ideally) does not describe the
> release version. The numbers within the library filename are part of the
> soname, which is supposed to indicate ABI compatibility, not the release.
> It currently matches the release number in FreeRDP's case, but it would
> definitely be a major improvement if it didn't. There's no other way for
> the system linker to know that software was built against an older version
> of the ABI and should not be linked against the newer version.
> 
> Michael Jumper
> CEO, Lead Developer
> Glyptodon Inc &lt;https://glyp.to/&gt;.





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Re: RDP - Can't login : "You have been disconnected"

Posted by Mike Jumper <mi...@glyptodon.com>.
On Sun, May 2, 2021 at 10:43 AM varknar <gu...@nostalgeek.net> wrote:

> Thanks for your time!
>
> From memory (and my .bash_history), I installed the server part with the
> tarball (tar.gz) from guacamole.apache.org, version 1.3.0.
>
> As for freerdp, based on filenames under /usr/lib/arm-linux-gnueabihf, I am
> on 2.0.0
>

What does the package manager say?

It's possible that the version of FreeRDP installed in your case is a git
snapshot, not the actual 2.0.0 release, and that you are running into
unpredictable memory behavior as a result. I'm not sure about Rasbian, but
this is the case for Debian - the package in the main buster repos is a git
snapshot, whereas the package in the backports repo is a stable release.

Also, beware that checking the filename (ideally) does not describe the
release version. The numbers within the library filename are part of the
soname, which is supposed to indicate ABI compatibility, not the release.
It currently matches the release number in FreeRDP's case, but it would
definitely be a major improvement if it didn't. There's no other way for
the system linker to know that software was built against an older version
of the ABI and should not be linked against the newer version.

Michael Jumper
CEO, Lead Developer
Glyptodon Inc <https://glyp.to/>.

Re: RDP - Can't login : "You have been disconnected"

Posted by varknar <gu...@nostalgeek.net>.
Thanks for your time!

From memory (and my .bash_history), I installed the server part with the
tarball (tar.gz) from guacamole.apache.org, version 1.3.0.

As for freerdp, based on filenames under /usr/lib/arm-linux-gnueabihf, I am
on 2.0.0



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Re: RDP - Can't login : "You have been disconnected"

Posted by Mike Jumper <mi...@glyptodon.com>.
On Sun, May 2, 2021 at 12:42 AM varknar <gu...@nostalgeek.net> wrote:

> Hey,
>
> I'm a fan of Guac' and recently built it on my RPi4.  However, unlike my
> virtual machine, on Ubuntu 20.04, it is on Raspbian Buster.  I had no issue
> on the Ubuntu VM but it wasn't convenient to have a VM on the computer I
> need to remote into...if it reboots, the VM couldn't auto-start.
>
> However, the issue is on the Raspberry Pi.  When I try to connect to my
> Windows 10 machine on Guacamole hosted there, it connects and immediately
> disconnects with "You have been disconnected" on a black background.
> Nothing happens on the Windows machine, but based on eventvwr, the session
> has been created and destroyed without errors, the login worked.
>
> Checking syslog, catalina logs, no error spotted - everything seems to work
> as normal.  I do some Google-fu and stumble on :
>
>
> http://apache-guacamole-general-user-mailing-list.2363388.n4.nabble.com/Upgrade-from-0-9-14-to-1-1-0-RDP-now-doesn-t-connect-td8207.html
>
> then
>
>
> http://apache-guacamole-general-user-mailing-list.2363388.n4.nabble.com/Problems-to-RDP-windows-10-td7565.html
>
> which seemed to absolutely be the same thing, but no, no luck with
> disabling
> WDDM driver (and rebooting) or playing with NLA authentication.  Plug, I
> have no segfault or Error 114 spotted in some posts.
>
> Windows 10 is at version 20H2.
>
> Any ideas?  How can I get an error to see what's wrong?
>

What version of FreeRDP is installed and what version of guacamole-server
was built? Did you build guacamole-server from the release .tar.gz or from
git?

Michael Jumper
CEO, Lead Developer
Glyptodon Inc <https://glyp.to/>.