Re: X.Org fail on fat clients after update

Hi,

after last updates to kernel

Linux cml 4.15.0-50-generic #54-Ubuntu SMP Mon May 6 18:46:08 UTC 2019 
x86_64 x86_64 x86_64 GNU/Linux

both on client a and server problem still persists. The only think which 
I find out is: When we reboot the ltsp server and boot the client first 
time, everything is OK - the client boots. When we reboot client now, 
the second boot fails (with the errors in X.org.log). Further the first 
boot of thin client is relatively slow, the second is faster (the image 
file is not in the cache of the server?). I tried to restart nbd-server, 
tftp, nfs services on the  server  before client boots second time, but 
without success (the problem remains).

Has anybody ideas where is the problem?

Thank you,

H.


Dne 07. 05. 19 v 8:29 Jan Hubený napsal(a):
> Hi,
>
> we had a working set up where ltsp server is Ubuntu 18.04 LTS and we 
> use fat clients on amd64 architecture.  After last update (apt update 
> && apt upgrade both in server and fat client chroot) we have problems 
> with fat client boot. The X.Org server does not start properly. There 
> are two errors in the attached X.Org.log (downloaded from fatclient)
>
> (EE) systemd-logind: failed to get session: PID 852 does not belong to 
> any known session
>
> and
>
> (EE) /dev/dri/card0: failed to set DRM interface version 1.4: 
> Permission denied
>
> the priviledges of /dev/dri/card0 on the fat client are
>
> # ls -l /dev/dri/card0
> crw-rw---- 1 root video 226, 0 kvě  7 07:04 /dev/dri/card0
>
> the X server on the fat client is running after boot
>
> # ps aux | grep X
> root       720  0.0  0.0  22624  1260 tty7     S+   07:04 0:00 xinit 
> /usr/share/ltsp/xinitrc /usr/sbin/ldm -- :7 vt7 -auth 
> /var/run/ldm-xauth-7LapVwqYZ/Xauthority -listen tcp -config 
> /var/run/ltsp-xorg.conf -depth 24 -br
> root       852  0.6  0.4 636620 38636 tty7     S<l 07:04 0:16 
> /usr/lib/xorg/Xorg :7 vt7 -auth 
> /var/run/ldm-xauth-7LapVwqYZ/Xauthority -listen tcp -config 
> /var/run/ltsp-xorg.conf -depth 24 -br
> root      1556  0.0  0.0  13440  1044 pts/0    S+   07:47 0:00 grep X
>
> However the screen is blank and the LCD monitor show error message, 
> correct the dynamic range, maximum is 1920x1200 @ 60Hz.
>
>
>
> Can anybody help with this issue?
>
> Thank you in advance,
>
> Jan Hubený
>
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D I S C L A I M E R

Personal data protection according to Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data (General Data Protection Regulation)
By e-mail communication with this e-mail address (especially by sending e-mails and replies) you hereby agree with processing of yours personal data especially in the scope of data contained in email and it`s attachments. Data subject has the following rights: (i) to withdraw consent with personal data processing , (ii) to ask SOMA company for information which personal data are being processed, (iii) to ask for explanation regarding processed personal data, (iv) to ask for access to personal data and right of rectification of inaccurate personal data, (v) to demand erasure of personal data, (iv)  in case of doubts regarding compliance with GDPR regulation right to raise objections in front of SOMA company, court or the Office for personal data protection. 
The SOMA company processes especially personal data of SOMA company`s business partners. The SOMA company hereby politely asks it`s business partners to not to send to SOMA company by e-mails or by any other means personal data of any third persons (for instance business partners` employees, participants of agreements, contracts or other legal relationships etc.), these personal data will not be processed by SOMA company and will be immediately erased. If you are not a business partner of SOMA company and you are sending to SOMA company any personal data in any kind of form (for instance by e-mail, data mailbox or by letter etc.) you hereby agree with processing of your personal data in the scope of personal data sent by you and you have right described in point (i) to (vi) hereof. 
The SOMA company is processing personal data especially due to the following purposes: (a) processing is necessary for the performance of a contract to which the data subject is party or in order to take steps at the request of the data subject prior to entering into a contract, or (b) processing is necessary for compliance with a legal obligation to which the controller is subject, or (c) processing is necessary in order to protect the vital interests of the data subject or of another natural person; or (d) processing is necessary for the purposes of the legitimate interests pursued by the controller or by a third party.
Data subject is obliged to announce the SOMA company any changes of personal data of the data subject.

Confidentiality  
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  potential risk and agree with unsecured communication. For avoidance of any doubt law firm pays attention to the fact that this e-mail including its attachments could not be in any case con
 sidered as offer for conclusion of agreement pursuant to  § 1731 of act no 89/2012 Coll. as amended, neither confirmation letter pursuant to the § 1757 of act no 89/2012 Coll. as amended.

Our full GDPR policy may be found on www.soma-eng.com/en/gdpr

Překlad výše uvedeného textu (Ochrana osobních údajů dle nařízení Evropského parlamentu a Rady EU a Důvěrnost informací) naleznete na www.soma-eng.com/cs/disclaimer

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