Re:[Thinkpad] T21 WinXP weird background sounds from speakers

A question for the O.P.:

Is it _always_ constant? I noticed the same thing with my T21 (running
Linux), but it's only when the screen isn't running at full brightness
(either manually lowered w/ fn-End or when running on battery power).
At full brightness on AC power, the sound isn't there. I assume it's
something related to the "dimmer" circuit for the backlight...

  - Brian

> Message: 3
> From: jberry@islandnet.com (Jonathan Berry)
> To: thinkpad@stderr.org
> Subject: Re: [Thinkpad] T21 WinXP weird background sounds from speakers
> Date: Thu, 10 Apr 2003 14:14:29 -0800
> Organization: www.islandnet.com/~jberry/
>
> In article <5.2.0.9.0.20030331155618.042d9b18@po1.vivacenetworks.com>,
> "Andrew G. Malis" <Andy.Malis@vivacenetworks.com> wrote:
>
>> There's a constant low-level intermittent (about a 75% duty cycle with
>> varying but average cycles of 1/2 sec to about 4 seconds) "whine".
>
> There was a slightly similar problem with the 701C under a
> particular BIOS.

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Received on Fri Apr 11 10:40:47 2003