Mark Vojkovich wrote: > > On Wed, 13 Mar 2002, David E. Young wrote: > > > Greetings. First, the hardware particulars; Athlon 1400, 512mb, nVidia TNT2 > > 16mb, ViewSonic A90f, Redhat 7.2, XFree86 4.x (whatever shipped with Redhat > > 7.2). > > > > Ok. The A90f is brand new and the second one I've tried in the last four > > weeks. First monitor: after a few days, whenever the monitor went into > > power-saving mode it exhibited an audible "whine" from the rear area. This > > while running Windows 2000. I was ready to install Redhat anyhow, so did > > that. Same problem. Also, the "whine" was louder during OS boot while Linux > > was in text mode (640x400). The "whine" would disappear after X started but > > resume whenever the monitor entered standby, off, etc. Contacted ViewSonic; > > they said "bad monitor". Returned it last week to Office Depot (nice people) > > and received another A90f. Started it up, no whine. Cool. Two days later I > > was working along and POP! from the monitor, screen goes blank for a few > > seconds, then image returns fine. Uh oh. Few days gone by and monitor > > working fine. Shut system down for two days or so, rebooted and monitor > > exhibited very loud whine during Linux boot that disappeared after X > > started. Sigh. > > > > WTF, O? The same hardware drove a ViewSonic 17PS for many months and that > > 17PS is six years old. I am *not* overclocking anything, don't fiddle with > > xvidtune or anything like that. And, I've tried the native nVidia drivers > > too. > > This really sounds like a problem with the monitor. > > http://www.google.com/search?hl=en&q=+Viewsonic+%22high+pitched%22 > > There are some suggestions about plugging a monitor into a > different power outlet. Not sure I'd expect that to help though. > > Mark.
Definitely bad hardware. It's the high voltage flyback transformer. The frequency is related to the scanline rate. Lower scan rates will come closer to the audible spectrum and be louder. The only thing you can do is try different video modes. That big pop is also from the high voltage transformer. Arcing usually only gets worse. Be prepared to exercise the warranty again.... Joe Krahn _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
