Subject: Re: X hangs hard, what to do?
To: Wayne Cuddy <>
From: Steven M. Bellovin <>
List: netbsd-users
Date: 12/05/2001 19:30:30
In message <>, Wayne Cuddy writes:
>Did you check to see if the xserver was still running when you were in the
>system via telnet?

I've had similar experiences -- the X server was *not* running at the 

>On Wed, Dec 05, 2001 at 10:29:13PM +0100, Arto Huusko wrote:
>> What is one supposed to do, when X (4.1.0, don't remember the date)
>> hangs hard (on 1.5.2/i386). By hanging hard I mean that X crashes, but
>> as it goes, it crashes the display with it:
>>  1. the display freezes, and doesn't drop to console mode
>>  2. virtual consoles can't be switched
>>  3. no use trying to kill X, as it is already dead
>> I was able to log in to the computer using telnet, but that's it.
>> I couldn't recover the display, so I had to reboot.
>> Also, I could drop to DDB (since telnet stopped responding), and
>> continue from there, but still the frozen X screen stayed on.
>> Somehow, this feels as a bug of some kind.
>> (As I wrote the above, I realize that I didn't try to actually
>> restart X... from the telnet login for example. Would that have worked?)
>> In any case, the crash seemed to be somekind of race condition
>> or such: I started galeon, and while it loaded its pages I tried
>> to move the window... and boom.
>> -- 
>> Arto Huusko ( | Diving Is Fun
>> Divecalc @

		--Steve Bellovin,
		Full text of "Firewalls" book now at