blank screen after login for cpanel

If this is a new server, make sure you choose a theme under
Server Configuration<<Basic cPanel/WHM Setup <<Default cPanel Theme
* Enter the default cPanel theme for newly created accounts whose
package does not specify a theme.

If that fails,

try running from root in ssh

/scripts/portsup

then run

/usr/local/cpanel/bin/checkperlmodules

after that finishes, run

/scripts/upcp --force

see if that clears it up.

 

What FreeBSD version are you running on your server?

Did you check the log file? /usr/local/cpanel/logs/error_log
Run these two commands at the prompt and see if that helps:
/scripts/portsup
portupgrade compat4x-i386-5.X (Assuming you are running FreeBSD i386 v5.3 or v5.4)

 

WHM 11.1.0 cPanel 11.1-E8012
REDHAT Enterprise 4 i686 - WHM X v3.1.0

I am having the same problem on one of my cpanel servers.

I upgraded to the latest edge version so I can use the X3 theme, and all of the themes (x, x2, x3) do not work. Instead, I see only a blank screen. This happens all of the accounts on this server. Cpanel now does not work.

I tried these options...

/scripts/portsup
/usr/local/cpanel/bin/checkperlmodules
/scripts/upcp --force

... but the problem remains. I have switched back and forth from the ssl port to the non ssl port and I have unchecked the force redirect to ssl and also checked that option. In all cases, the cpanel remains just a blank page. The login prompt comes up, proper user password is accepted, and blank screen.

Anyone have any suggestions as to why this is happening?

 

Any errors in the log files: /var/cpanel/logs/*

In addition, login to the WHM >> Tweak Settings >> System section >> un-check the following: Disable login with root or reseller password into the users' cPanel interface. Also disable switch account dropdown in themes with switch account feature
See if that helps.

 

Had the same problem on Cent OS 4, ran the commands mentioned and its working fine now.

 

Contacted Cpanel support and this is what they said....

You'll need to increase RLIMIT_RSS for cPanel to function properly. The
following error is being generated:

The rlimit 'RLIMIT_RSS' is set below the maximum sane threshold for cPanel to
function. Currently it is set at [soft:78643200 hard:78643200]. Please
increase it to at least 134217728.

Since I recently had my IT company upgrade our Kernel to 2.6.9-42.0.10.EL , I had my IT company change the RLIMIT_RSS setting as suggested, and the issue is now resolved.

 

i have freebsd 6.2 and i have the same problem with the blank pages after login in a few servers ..

how can i set the rlimit_rss in the system ?

 

I have a same problem..
I try to revert from Current to Stable and then update to Edge... but cpanel still show blank page..

but WHM and Webmail can work properly

FYI I'm using Fedora Core 4

 

If I don't mistaken there is rlimit on httpd.conf

 

I don't think that is the same thing as rlimit_rss. My IT company handled this for me, so I cannot explain how to do it.

 

Check /var/cpanel/cpanel.config

Cehck
engine=cpanel (Not cpanel.pl.)
enginepl=cpanel.pl

 

That's one of the solutions. Good point. Oe of our clients had the same exact problem few days ago, but none of these solutions worked for him. To fix the problem, we had to rebuild several corrupted files.

 

When this happened to us it was because the skin being used had somehow become linked to a non-existant one.

 

Damn fine question. Can anyone answer this?

I'm having this problem sporadically. Restarting cPanel doesn't solve it, only a full system reboot. Which...well...certainly isn't desireable.