Discussion:
blue screen on Logoff
Johan Vermeulen
2012-12-14 14:18:12 UTC
Permalink
Dear All,

I'm testing a new thinclient,
the machine has an Asus Motherboard, an AMD c-60 APU with Radeon HD
Graphics.
At the moment it has 4096 MB (DDR3)

So far everything runs very fast and good, BUT
when logging off it shows a very bright and very blue screen.

The only way to get to the logon screen again is by pressing
ctrl-alt-2Xbackspace.

Can anyone offer any advise on this? I don't know where to start looking.

many thanks for any help.

Greetings, J.

IT-medewerker
Caw De Kempen


Opensource Software is the future.
Jim Kinney
2012-12-14 19:16:01 UTC
Permalink
Sounds like the GDM/XDM/ login screen is not starting back up. The
default X background is bright blue. It should be overlayed with the
window manager specified stuff. ctl-alt-bkspc is killing X so the
login screen reappears.

Look in the /var/log/X.org logs for clues on why things are failing.

I'm assuming the system is in runlevel 5.

On Fri, Dec 14, 2012 at 9:18 AM, Johan Vermeulen
Post by Johan Vermeulen
Dear All,
I'm testing a new thinclient,
the machine has an Asus Motherboard, an AMD c-60 APU with Radeon HD
Graphics.
At the moment it has 4096 MB (DDR3)
So far everything runs very fast and good, BUT
when logging off it shows a very bright and very blue screen.
The only way to get to the logon screen again is by pressing
ctrl-alt-2Xbackspace.
Can anyone offer any advise on this? I don't know where to start looking.
many thanks for any help.
Greetings, J.
IT-medewerker
Caw De Kempen
Opensource Software is the future.
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
--
--
James P. Kinney III

Every time you stop a school, you will have to build a jail. What you
gain at one end you lose at the other. It's like feeding a dog on his
own tail. It won't fatten the dog.
- Speech 11/23/1900 Mark Twain

http://electjimkinney.org
http://heretothereideas.blogspot.com/
Johan Vermeulen
2012-12-15 09:42:31 UTC
Permalink
Hello Jim,


thanks for the reply. I will check this when getting back to work.

I assumed that log would just show output for the graphics card of the server and not of the thin client.

Greetings J.
verzonden m.b.v Android
vandaar de beknoptheid.
Post by Jim Kinney
Sounds like the GDM/XDM/ login screen is not starting back up. The
default X background is bright blue. It should be overlayed with the
window manager specified stuff. ctl-alt-bkspc is killing X so the
login screen reappears.
Look in the /var/log/X.org logs for clues on why things are failing.
I'm assuming the system is in runlevel 5.
On Fri, Dec 14, 2012 at 9:18 AM, Johan Vermeulen
Post by Johan Vermeulen
Dear All,
I'm testing a new thinclient,
the machine has an Asus Motherboard, an AMD c-60 APU with Radeon HD
Graphics.
At the moment it has 4096 MB (DDR3)
So far everything runs very fast and good, BUT
when logging off it shows a very bright and very blue screen.
The only way to get to the logon screen again is by pressing
ctrl-alt-2Xbackspace.
Can anyone offer any advise on this? I don't know where to start looking.
many thanks for any help.
Greetings, J.
IT-medewerker
Caw De Kempen
Opensource Software is the future.
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
--
--
James P. Kinney III
Every time you stop a school, you will have to build a jail. What you
gain at one end you lose at the other. It's like feeding a dog on his
own tail. It won't fatten the dog.
- Speech 11/23/1900 Mark Twain
http://electjimkinney.org
http://heretothereideas.blogspot.com/
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
Jim Kinney
2012-12-15 18:28:28 UTC
Permalink
It sounds like the TC is where the problem is. X session ends on server and
local dm is not running as a service.
Post by Johan Vermeulen
Hello Jim,
thanks for the reply. I will check this when getting back to work.
I assumed that log would just show output for the graphics card of the
server and not of the thin client.
Greetings J.
verzonden m.b.v Android
vandaar de beknoptheid.
Post by Jim Kinney
Sounds like the GDM/XDM/ login screen is not starting back up. The
default X background is bright blue. It should be overlayed with the
window manager specified stuff. ctl-alt-bkspc is killing X so the
login screen reappears.
Look in the /var/log/X.org logs for clues on why things are failing.
I'm assuming the system is in runlevel 5.
On Fri, Dec 14, 2012 at 9:18 AM, Johan Vermeulen
Post by Johan Vermeulen
Dear All,
I'm testing a new thinclient,
the machine has an Asus Motherboard, an AMD c-60 APU with Radeon HD
Graphics.
At the moment it has 4096 MB (DDR3)
So far everything runs very fast and good, BUT
when logging off it shows a very bright and very blue screen.
The only way to get to the logon screen again is by pressing
ctrl-alt-2Xbackspace.
Can anyone offer any advise on this? I don't know where to start
looking.
Post by Jim Kinney
Post by Johan Vermeulen
many thanks for any help.
Greetings, J.
IT-medewerker
Caw De Kempen
Opensource Software is the future.
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
--
--
James P. Kinney III
Every time you stop a school, you will have to build a jail. What you
gain at one end you lose at the other. It's like feeding a dog on his
own tail. It won't fatten the dog.
- Speech 11/23/1900 Mark Twain
http://electjimkinney.org
http://heretothereideas.blogspot.com/
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
Johan Vermeulen
2012-12-21 14:10:38 UTC
Permalink
Hello All, hello Jim,

thanks again for the reply.

In the last busy days before the holiday's, I was unable to test this again.
Sorry for that!

I will post again soon.

greatings, j.
Post by Jim Kinney
It sounds like the TC is where the problem is. X session ends on
server and local dm is not running as a service.
Hello Jim,
thanks for the reply. I will check this when getting back to work.
I assumed that log would just show output for the graphics card of
the server and not of the thin client.
Greetings J.
verzonden m.b.v Android
vandaar de beknoptheid.
Post by Jim Kinney
Sounds like the GDM/XDM/ login screen is not starting back up. The
default X background is bright blue. It should be overlayed with the
window manager specified stuff. ctl-alt-bkspc is killing X so the
login screen reappears.
Look in the /var/log/X.org logs for clues on why things are failing.
I'm assuming the system is in runlevel 5.
On Fri, Dec 14, 2012 at 9:18 AM, Johan Vermeulen
Post by Johan Vermeulen
Dear All,
I'm testing a new thinclient,
the machine has an Asus Motherboard, an AMD c-60 APU with Radeon HD
Graphics.
At the moment it has 4096 MB (DDR3)
So far everything runs very fast and good, BUT
when logging off it shows a very bright and very blue screen.
The only way to get to the logon screen again is by pressing
ctrl-alt-2Xbackspace.
Can anyone offer any advise on this? I don't know where to
start looking.
Post by Jim Kinney
Post by Johan Vermeulen
many thanks for any help.
Greetings, J.
IT-medewerker
Caw De Kempen
Opensource Software is the future.
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
--
--
James P. Kinney III
Every time you stop a school, you will have to build a jail. What you
gain at one end you lose at the other. It's like feeding a dog on his
own tail. It won't fatten the dog.
- Speech 11/23/1900 Mark Twain
http://electjimkinney.org
http://heretothereideas.blogspot.com/
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see<http://www.k12os.org>
Johan Vermeulen
2013-01-08 12:49:16 UTC
Permalink
Dear All,

I've setup a server from scratch to be able to test this further.

In /var/log/Xorg_0_log I see no EM:

[***@testserver i386]# tail -f /var/log/Xorg.0.log
[ 40.549] AUDIT: Tue Jan 8 13:11:53 2013: 2422: client 23 disconnected
[ 40.900] AUDIT: Tue Jan 8 13:11:53 2013: 2422: client 16 disconnected
[ 40.901] AUDIT: Tue Jan 8 13:11:53 2013: 2422: client 14 disconnected
[ 41.055] AUDIT: Tue Jan 8 13:11:53 2013: 2422: client 14 connected
from local host ( uid=42 gid=42 pid=2536 )
Auth name: MIT-MAGIC-COOKIE-1 ID: 279
[ 41.056] AUDIT: Tue Jan 8 13:11:53 2013: 2422: client 14 disconnected
[ 41.462] AUDIT: Tue Jan 8 13:11:54 2013: 2422: client 15 disconnected
[ 41.463] AUDIT: Tue Jan 8 13:11:54 2013: 2422: client 13 disconnected
[ 71.226] AUDIT: Tue Jan 8 13:12:24 2013: 2422: client 22 disconnected
[ 71.228] AUDIT: Tue Jan 8 13:12:24 2013: 2422: client 20 disconnected

This is my /var/lib/tftpboot/ltsp/i386/lts.conf:

[default]
# X_COLOR_DEPTH=16
LDM_LANGUAGE=nl_BE.UTF_8
LOCALDEV=True
SOUND=True
X_NUMLOCK=True
NBD_SWAP=True
SYSLOG_HOST=server
LDM_GLOBAL_DMRC=/etc/ltsp/ldm-global-dmrc
XKBLAYOUT=be
#LDM_NUMLOCK=true
SCREEN_01=ldm
# LDM_DIRECTX=yes is very insecure, but it is faster and more scalable
LDM_DIRECTX=yes
# LDM_DEBUG=yes writes to /var/log/ldm.log during client runtime
LDM_DEBUG=yes

The thinclient has an AMD Radeon HD 6290 graphical card, I think that is
the problem.

But I don't know where to make adjustments .

Can anyone help?

Thanks for any reply.

Greetings, J.
Post by Jim Kinney
It sounds like the TC is where the problem is. X session ends on
server and local dm is not running as a service.
Hello Jim,
thanks for the reply. I will check this when getting back to work.
I assumed that log would just show output for the graphics card of
the server and not of the thin client.
Greetings J.
verzonden m.b.v Android
vandaar de beknoptheid.
Post by Jim Kinney
Sounds like the GDM/XDM/ login screen is not starting back up. The
default X background is bright blue. It should be overlayed with the
window manager specified stuff. ctl-alt-bkspc is killing X so the
login screen reappears.
Look in the /var/log/X.org logs for clues on why things are failing.
I'm assuming the system is in runlevel 5.
On Fri, Dec 14, 2012 at 9:18 AM, Johan Vermeulen
Post by Johan Vermeulen
Dear All,
I'm testing a new thinclient,
the machine has an Asus Motherboard, an AMD c-60 APU with Radeon HD
Graphics.
At the moment it has 4096 MB (DDR3)
So far everything runs very fast and good, BUT
when logging off it shows a very bright and very blue screen.
The only way to get to the logon screen again is by pressing
ctrl-alt-2Xbackspace.
Can anyone offer any advise on this? I don't know where to
start looking.
Post by Jim Kinney
Post by Johan Vermeulen
many thanks for any help.
Greetings, J.
IT-medewerker
Caw De Kempen
Opensource Software is the future.
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
--
--
James P. Kinney III
Every time you stop a school, you will have to build a jail. What you
gain at one end you lose at the other. It's like feeding a dog on his
own tail. It won't fatten the dog.
- Speech 11/23/1900 Mark Twain
http://electjimkinney.org
http://heretothereideas.blogspot.com/
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see <http://www.k12os.org>
_______________________________________________
K12OSN mailing list
https://www.redhat.com/mailman/listinfo/k12osn
For more info see<http://www.k12os.org>
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