rhgb freezing computer

Adam Jackson ajackson at redhat.com
Tue Sep 26 19:58:50 UTC 2006


Kwan Lowe wrote:
>> On Tue, Sep 26, 2006 at 01:29:35PM -0400, Adam Jackson wrote:
>>> Just as an update, I'm still looking into this, it's pretty brutal.  It
>>> appears to be a bug in the kernel's VT handling code, which is making my
>>> eyes go all crossy.  Hopefully I'll have at least a hacky workaround by
>>> the end of the day, in the meantime just disable rhgb.
>> Any more details and I'll look into the kernel side as I'm working on
>> tty and vt locking currently.
> 
> Excuse the elementary question...
> Would these tty and vt errors in any way be related to some odd behaviour I'm seeing
> with the "screen" virtual terminal utility?  I'm experiencing some lockups in screen
> whenever I do anything particularly "busy". E.g., when doing an update it will
> freeze on  printing the hashed progress bar. That screen session will hang
> completely.  Even the SSH escape sequence will not disconnect me. I need to open a
> second SSH session and "kill -9" the existing screen sessions.

Unlikely.  The rhgb bug looks like it's in the VT code, and has to do 
with switching VTs; screen only ever touches pseudoterminals, and 
shouldn't be hitting the VT switch code at all.

- ajax




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