Black screen in 0.2.15

[saddy001]

Hello, this is

• Ubuntu 18.04.5 with compiled xrdp v0.9.15 and xorgxrdp v0.2.15
• ./configure --enable-fuse --enable-pixman --enable-tjpeg

While version .14 was all fine, after updating to v.15, everything seemed fine here too. Only after about 24hours or so, I'm getting a black screen after login. From then on, this is permanent. The server does not much in that time, but two things: starting a virtualbox VM and hybernating "/usr/sbin/rtcwake -m off -s 36000".
I narrowed down working vs non-working logs to two essential lines in /home/user/.xorgxrdp.*.log. In the non-working log situation, I'm getting lines

jpeg support 8807
rdpCapture3: unimplemented color conversion

while in the working versions, I get
jpeg support 0

I believe jpeg support returns an error code here, being 8807 in the error case and 0 in the no-error case.

xorgxrdp/module/rdpClientCon.c:
843     LLOGLN(0, ("  jpeg support %d", clientCon->client_info.jpeg));

If I use another client (Opera instead of Firefox) the issue persists. The other logs (/var/log/xrdp.log, /var/log/xrdp-sesman.log) contain no relevant difference between working and non-working situations, but if you need them, I have them here. Also rebooting does not help.

I believe there is some issue in the clientCon->client_info function.

PS: If I revert to .14 everythings starts working again.

[saddy001]

It also happens in v0.2.14.

[metalefty]

Can you confirm what happens if you turn on JPEG on the CLIENT?

[saddy001]

Thanks for your reply. I'm using apache guacamole's web based client. As far as I know, there is no option to enable JPEG. The current status is the following:

• v.14 seems also affected
• I removed all config files of x*rdp
• I switched from checkinstall to make install
• I reverted to v.14, mostly because there seem to be some errors in the log, that are not really errors (occur also when all is okay, there is already a ticket for that)
• I checked the logs again in the last black-screen situation and this time, I found no suspicious jpeg support lines. Moreover I found nothing that looks like a real error.
• With the above steps done, it's stable since ~24hours

Normally I would paste all the logs now, but this time, I threw them away (it was late). I suggest I'll migrate to v.16 when it's ready and open a new issue with logs if it happens again. Except you need any more information?

[metalefty]

Thanks for the feedback. BTW, I meant you to try turn on/off JPEG. That was my typo. Anyway, I'll have a look. Thanks!

[saddy001]

It's stable again. My guess is that it was one of the config files that broke things. Although I never changed one of them.

rm -R /etc/xrdp /etc/X11/xrdp /etc/pam.d/xrdp-sesman /usr/sbin/xrdp* /var/log/xrdp*