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Re: LCD sync rates

> On Thu, Jun 28, 2001 at 10:59:28AM -0700, Heather wrote:
> > > and the slightest variation can result in a black screen when your start 
> > > the X server.
> > 
> > I recommend having your net connection live and be ssh'd in from another box.
> > That keeps you a visible text session.
> > 
> > You can sometimes use a different GUI utility (e.g. SVGAlib app, or vga_reset
> > or something) to reinit the video and keep working without having to reboot
> > to yank its chain.
>  CTRL+ALT+backspace or CTRL+ALT+F1 still work even when the display
> doesn't want to show you anything.

Not necessarily.  The X server is also responsible for input focus - one might
argue that's its primary job - and if it's *really* unhappy, it won't get around
to your useful keystroke.  Too busy dealing with a crying vidcard.  Maybe next
week sometime.

Meanwhile your monitor is squealing at you :( :( :(

>  If the X server locks up, you can
> always use alt+sysrq+u, alt+sysrq+b

Magic sysrq's might only work at a console prompt.  cf above, your keyboard
may be inoperable.

Been there, done that ... have lots of t-shirts ...

> to umount/remount-readonly all
> your partitions, then reboot.  This is handled very early on in the
> kernel, so it doesn't stop working no matter what user space software
> does, unless the kernel itself actually locks up, or the keyboard
> physically stops working.

Yes, and yes.  Esp. with those modern AGP things.

>  Of course, rebooting takes time, so if ctrl+alt+backspace doesn't
> work then logging in remotely with ssh or a null modem before messing
> with stuff will save time.

Thus my recommendation.  Already being logged in will tell you for sure
if it's really dead or just blitting out on you.

* Heather Stern * star@ many places...

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