abe@mace.cc.purdue.edu (Vic Abell) (05/11/91)
A screen darkener package I developed is now available via anonymous ftp from sonata.cc.purdue.edu. It can be used to completely darken the screen at logout, thus preventing burnin of the login dialogue box. The package provides LoginHook and LogoutHook shell scripts and the source to a small program that lowers and restores the EVS and NVRAM video levels at logout and login time. The package may be found in: pub/next/1.0-release/sources/darken.tar.Z or pub/next/2.0-release/sources/darken.tar.Z It has been tested under NeXTStep 1.0 and 2.0, so it is located in both the 1.0-release and 2.0-release subdirectories. Vic Abell <abe@mace.cc.purdue.edu>
ddj@zardoz.club.cc.cmu.edu (Doug DeJulio) (05/12/91)
In article <7436@mace.cc.purdue.edu> abe@mace.cc.purdue.edu (Vic Abell) writes: >A screen darkener package I developed is now available via anonymous ftp >from sonata.cc.purdue.edu. It can be used to completely darken the screen >at logout, thus preventing burnin of the login dialogue box. I grabbed this program and tried it out. It had basically the same effect as dimming the monitor all the way by hand after logging out. Eventually, I'll still get my login box burnt in. This summer I'll probably finish the logout hook I'm working on to fill video memory with black. I was hoping that's what this program did. -- Doug DeJulio
abe@mace.cc.purdue.edu (Vic Abell) (05/13/91)
In article <13002@pt.cs.cmu.edu>, ddj@zardoz.club.cc.cmu.edu (Doug DeJulio) writes: > In article <7436@mace.cc.purdue.edu> abe@mace.cc.purdue.edu (Vic Abell) writes: > >A screen darkener package I developed is now available via anonymous ftp > > I grabbed this program and tried it out. It had basically the same > effect as dimming the monitor all the way by hand after logging out. > Eventually, I'll still get my login box burnt in. Most of the monitors to which I have applied this darkening technique go completely black if the EVS and NVRAM levels are set to zero. I have seen one monitor which did not completely blacken and it had been tweaked because it was growing dim. So, I don't think there is much danger that a properly adjusted monitor will suffer login box burn-in unless its intensity hardware has been adjusted.
ddj@zardoz.club.cc.cmu.edu (Doug DeJulio) (05/14/91)
In article <7448@mace.cc.purdue.edu> abe@mace.cc.purdue.edu (Vic Abell) writes: >In article <13002@pt.cs.cmu.edu>, ddj@zardoz.club.cc.cmu.edu (Doug DeJulio) writes: >> I grabbed this program and tried it out. It had basically the same >> effect as dimming the monitor all the way by hand after logging out. >> Eventually, I'll still get my login box burnt in. > >Most of the monitors to which I have applied this darkening technique go >completely black if the EVS and NVRAM levels are set to zero. I have seen >one monitor which did not completely blacken and it had been tweaked >because it was growing dim. So, I don't think there is much danger that >a properly adjusted monitor will suffer login box burn-in unless its >intensity hardware has been adjusted. My monitor is brand new. I got it when I got my Slab, and it's never been worked on since then. If your statement is correct, then some of the monitors being shipped with new NeXTstations have been "tweaked". Note that I can only tell that the monitor isn't completely black if I'm otherwise in complete darkness. -- Doug DeJulio ddj@zardoz.club.cc.cmu.edu