From: Lyndon Nerenberg <lyndon@orthanc.ca>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] 9PI kernel stability
Date: Mon, 9 Feb 2015 14:41:33 -0800 [thread overview]
Message-ID: <E86DAF23-EB2D-4D81-A6DB-5F250357B418@orthanc.ca> (raw)
In-Reply-To: <25920c5f569c11e3ad75afb21ed626b9@hamnavoe.com>
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On Feb 9, 2015, at 1:48 AM, Richard Miller <9fans@hamnavoe.com> wrote:
>> 1. Text windows sometimes get black "garbage" on the background that
>> refuses to go, even if text is scrolled over it.
>> The size of the "garbage" is about 1 character, and looks like an
>> "island". That is, neither meaningful symbol, nor random pattern.
>
> There are known race conditions in the soft cursor code (not just on
> the pi). Could the black island be a "mouse dropping"?
This sounds like a bug exposed by drawterm, worked around by having draw page flip between re-writes. This cropped up around 2010 I think. Might it be related?
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next prev parent reply other threads:[~2015-02-09 22:41 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-09 8:23 Dante
2015-02-09 9:48 ` Richard Miller
2015-02-09 13:58 ` Dante
2015-02-09 15:52 ` Richard Miller
2015-02-09 18:20 ` Dante
2015-02-09 22:41 ` Lyndon Nerenberg [this message]
2015-02-10 8:27 ` Dante
2015-02-10 14:00 ` erik quanstrom
2015-02-10 14:44 ` Dante
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