[X2Go-Dev] Bug#1341: FreeRDP not working in x2go, requires BIG-REQUESTS extension

[Jens Reyer]

Package: x2goserver-x2goagent
Version: 4.1.0.2-0~1642~ubuntu1

Hi,

freerdp (freerdp and freerdp2) doesn't work with current default x2go:

~~~~~
$ xfreerdp /size:1700x1000 /u:USER /p:PASS /v:192.168.50.142 /cert-ignore
connected to 192.168.50.142:3389
X Error of failed request: BadLength (poly request too large or
internal Xlib length error)
Major opcode of failed request: 18 (X_ChangeProperty)
Serial number of failed request: 41
Current serial number in output stream: 45
~~~~~

The bug report for FreeRDP
(https://github.com/FreeRDP/FreeRDP/issues/4920) came to the
conclusion that it requires the BIG-REQUESTS extension, which is
disabled in x2go. Indeed removing these lines in
/etc/x2go/x2goagent.options fixes the issue:

~~~~~
# Disable BIG-REQUESTS, nx-libs does not implement this extension correctly.
# Leads to all sorts of weird crashes if left enabled.
X2GO_NXAGENT_DEFAULT_OPTIONS+=" -extension BIG-REQUESTS"
~~~~~

I'm using this for a day now without "weird crashes", but still assume
it's probably not the best idea.

Greets
jre


x2go client:

Linux Mint 19 Tara amd64
ii x2goclient 4.1.1.1-2 amd64


x2go server:

Linux Mint 19 Tara amd64
x2goserver from http://ppa.launchpad.net/x2go/stable/ubuntu

ii freerdp-x11 1.1.0~git20140921.1.440916e+dfs amd64 OR
ii freerdp2-x11 2.0.0~git201 amd64
ii nxagent 2:3.5.99.16- amd64
ii x2goserver 4.1.0.2-0~16 amd64
ii x2goserver-x2goagent 4.1.0.2-0~16 amd64
un x2goserver-xsession <keine> <keine>

[Ulrich Sibiller]

On Wed, Nov 14, 2018 at 2:07 PM Jens Reyer

Post by Jens Reyer
Package: x2goserver-x2goagent
Version: 4.1.0.2-0~1642~ubuntu1
Hi,
~~~~~
$ xfreerdp /size:1700x1000 /u:USER /p:PASS /v:192.168.50.142 /cert-ignore
connected to 192.168.50.142:3389
X Error of failed request: BadLength (poly request too large or
internal Xlib length error)
Major opcode of failed request: 18 (X_ChangeProperty)
Serial number of failed request: 41
Current serial number in output stream: 45
~~~~~
The bug report for FreeRDP
(https://github.com/FreeRDP/FreeRDP/issues/4920) came to the
conclusion that it requires the BIG-REQUESTS extension, which is
disabled in x2go. Indeed removing these lines in
~~~~~
# Disable BIG-REQUESTS, nx-libs does not implement this extension correctly.
# Leads to all sorts of weird crashes if left enabled.
X2GO_NXAGENT_DEFAULT_OPTIONS+=" -extension BIG-REQUESTS"
~~~~~
I'm using this for a day now without "weird crashes", but still assume
it's probably not the best idea.

I recommend to update to the current nightly build of the nxagent
package. I have added a patch that greatly improves the BIG-REQUESTs
code. Apps like Visual Studio Code and Atom are now working. You can
find information about the nightlies at
https://sunweavers.net/blog/node/20

Uli

[Stefan Baur]

Post by Ulrich Sibiller
I recommend to update to the current nightly build of the nxagent
package. I have added a patch that greatly improves the BIG-REQUESTs
code. Apps like Visual Studio Code and Atom are now working. You can
find information about the nightlies at
https://sunweavers.net/blog/node/20

Have you added yet another patch since last weekend, or is that the one
that was added to X2Go's nightly repositories last weekend?

Because if the latter, there's no need to switch to the arctica repo,
using X2Go's heuler repo will be sufficient.

Kind Regards,
Stefan Baur

[Ulrich Sibiller]

Post by Stefan Baur

Post by Ulrich Sibiller
I recommend to update to the current nightly build of the nxagent
package. I have added a patch that greatly improves the BIG-REQUESTs
code. Apps like Visual Studio Code and Atom are now working. You can
find information about the nightlies at
https://sunweavers.net/blog/node/20

Have you added yet another patch since last weekend, or is that the one
that was added to X2Go's nightly repositories last weekend?

I don't know about the X2Go repos. I know that it is in Arctica
Nightly and that it got merged on 2018-10-22.

Post by Stefan Baur
Because if the latter, there's no need to switch to the arctica repo,
using X2Go's heuler repo will be sufficient.

Uli

[Stefan Baur]

Post by Ulrich Sibiller

Post by Stefan Baur
Have you added yet another patch since last weekend, or is that the one
that was added to X2Go's nightly repositories last weekend?

I don't know about the X2Go repos. I know that it is in Arctica
Nightly and that it got merged on 2018-10-22.

Mihai updated the nx-libs in X2Go heuler to what's in the Arctica repo
last weekend - Friday or Saturday night, I believe.

-Stefan

[Jens Reyer]

Am Do., 15. Nov. 2018 um 18:46 Uhr schrieb Stefan Baur <

Post by Stefan Baur

Post by Ulrich Sibiller

Post by Stefan Baur
Have you added yet another patch since last weekend, or is that the one
that was added to X2Go's nightly repositories last weekend?

I don't know about the X2Go repos. I know that it is in Arctica
Nightly and that it got merged on 2018-10-22.

Mihai updated the nx-libs in X2Go heuler to what's in the Arctica repo
last weekend - Friday or Saturday night, I believe.

Thanks, for now I switched a testing server to the nightlies from
http://ppa.launchpad.net/x2go/ppa/ubuntu.
I still had to comment out the disabling of the BIG-REQUESTS extension.
Further for Mint Tara/Ubuntu bionic this requires to "downgrade" the x2go
packages, see #1344.

Besides that, everything is fine now.

Greets
jre