erict@flatline.UUCP (J. Eric Townsend) (06/12/89)
This is going to sound wierd, but please follow through... :-) I switched to a "log" window (a tail -f of uucp stuff) a few seconds ago. There was a line or two of characters that had a bend in them. Very slight, just a pixel in the middle. Just enough to make me think I was getting blurry-eyed. I went to another window, and the characters looked just fine. So I went back to the log window. The characters still had a bend in them. The log hadn't advanced, either. I got out a straitedge (metal, for graphics/layout work. I *KNOW* it's straight). Yep, they were bent. I could see the unevenness of the pixels. Here's how an "L" looked. x x x x x x x x xxxxx Aha!, I thought. Somebody once had a "wavy-monitor" problem and had to replace their monitor. I've caught mine before it's gone bad! Then, it got wierd. The log changed, so the screen scrolled up a couple of lines. The *SAME* lines stayed bent as they went up the screen. The lines that replaced them DID NOT BEND. I *told* you it was wierd. I've thought I've had "bending lines" before, but I could never observe them on a regular basis, so I assumed a flaky source of power or something. Anybody have any suggestions? The number of a good witch-doctor, maybe? -- Grep sed "awk! man cut grep, edit banner false! get help!" Man disable grep, split banner, join prof admin. Grep mount eqn, find path. Grep echo spell. False cat kill admin, man. Grep find banner, make true message. J. Eric Townsend-flatline!erict EastEnders Maillist: eastender@flatline.UUCP
wjc@ho5cad.ATT.COM (Bill Carpenter) (06/15/89)
In article <732@flatline.UUCP> erict@flatline.UUCP (J. Eric Townsend) writes: > The *SAME* lines stayed bent as they went up the screen. The lines that > replaced them DID NOT BEND. Sorry, this isn't an answer or even a suggestion, but it is a sort of a confirmation. Over the last couple of years, I've done considerable puttering around with different fonts in different windows, running different fonts as the "global" font, etc. While it all seems to basically work, there appear to be a few rough edges left in the font handling code in the window driver. For example, I used to run an italic 9x12 font as the "global" font. I would see all the time various little crumbs left over (often at the extreme left but sometimes other places) after scrolling. This happened in what seemed random events to me. Although I saw it all the time, I don't recall ever being able to reproduce it at will (but didn't try too hard). Okay, here's my solution: I just live with it (pretty helpful, huh? :-). -- Bill Carpenter att!ho5cad!wjc or attmail!bill
thad@cup.portal.com (Thad P Floryan) (06/16/89)
Re: Eric's "L" bent out of shape ... how about your font files? Are all "L" crooked? From my observations over the years, once the bits are written into the screen memory, aberrations will scroll. Anything causing a power glitch/hit could trigger a false write into screen memory (such as a refrigerator motor kicking in, air conditioner, turning on/off a flourescent lamp (on the same circuit), etc.) I used to have problems writing to floppies (on another computer) until I installed UPS systems with power conditioning ... for the past 3 years all has been fine. "Dirty" AC power is the bane of computers. Thad Floryan [ thad@cup.portal.com (OR) ..!sun!portal!cup.portal.com!thad ]