Error <RootX11ErrorHandler> running ROOT 4.00/06

[MC1]

Hello,
I would like to use ROOT version 4.00/06 running on a Linux RedHat 7.3 machine to which I am connecing via SSH using Fedora Core 3 (kernel 2.6.9-1.667, Xorg 6.8.1).
Whenever I try to run any command of ROOT I get the error:

Error in : BadAccess (attempt to access private resource denied) (XID: 64, XREQ: 102)

Do you any suggestion how to resolve this problem?

Thanks in advance.

[Valeriy_Onuchin]

Hi MC,
“any command” … interesting
XREQ: 102 is ChangeKeyboardControl request which
is called by either XAutoRepeatOn, XAutoRepeatOff, XChangeKeyboardControl .

What else you were typing when got this error? (“ALT-TAB”)?

Regards. Valeriy

[MC1]

[quote=“Valeriy Onuchin”]Hi MC,
“any command” … interesting
XREQ: 102 is ChangeKeyboardControl request which
is called by either XAutoRepeatOn, XAutoRepeatOff, XChangeKeyboardControl .

What else you were typing when got this error? (“ALT-TAB”)?

Regards. Valeriy[/quote]

Hello Valeriy,
i’ve got this error also without any command… just when i’ve arrived at

[code] *******************************************

•                                     *
  

•    W E L C O M E  to  R O O T       *
  

•                                     *
  

• Version 4.00/06 27 October 2004 *

•                                     *
  

• You are welcome to visit our Web site *

•      http://root.cern.ch            *
  

•                                     *
  

---

FreeType Engine v2.1.3 used to render TrueType fonts.
Compiled for linux with thread support.

CINT/ROOT C/C++ Interpreter version 5.15.138, May 23 2004
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0]
[/code]

if i press the “return” button the error is presented…
I think this is a problem of the X server running on my Fedora Core 3 box, because accessing the RedHat 7.3 machine on which ROOT is running with another system all things are performing well…

Thanks again,
MC

[Valeriy_Onuchin]

Hi,
in root.cern.ch/root/htmldoc/src/TR … eTermInput

which handles console input we have a call
gVirtualX->SetKeyAutoRepeat(kTRUE);
which probably is the reason of the trouble.

Untill now we didn’t have any problem with it (on all platforms)
… it would be interesting to investigate why it’s happened.

Regards. Valeriy

[MC1]

Hi,
do you have any suggestion on how to deal with this? Do you think i have to change something in my linux configuration?

Thanks,
MC

[antcheva]

Hi MC,

I see you are using ROOT v.4.00/06 - why not one of the oficial releases we have: 4.00/08 or 4.01/02?

Thank you, Ilka

[MC1]

Hi everybody,
someone else help me and finally it was possible to solve this problem.
This is due to a different policy used by OpenSSH for Fedora Core 3. The problem was solved just by using

ssh -Y  

instead of

 ssh -X 

for connecting to the other machine.
From the release notes of Fedora Core 3,

The behavior of ssh clients that are invoked with the -X flag has changed. In OpenSSH 3.8 and later, X11 forwarding is performed in a way that applications run as untrusted clients by default. Previously, X11 forwarding was performed so that applications always ran as trusted clients. Some applications may not function properly when run as untrusted clients. To forward X11 so that applications are run as trusted clients, invoke ssh with the -Y flag instead of the -X flag, or set ForwardX11Trusted in the ~/.ssh/config file.

Thanks to all the people that helped me in solving this issue.
MC