Date: Sun, 11 Mar 2001 16:07:24 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Yifeng Xu <websoft@yahoo.com> Cc: freebsd-questions@freebsd.org, ache@nagual.pp.ru, freebsd-bugs@FreeBSD.org Subject: Re: **HEADS UP** bug fix for pr25439 (patch) Message-ID: <20010311160724.A70656@mollari.cthul.hu> In-Reply-To: <20010304124849.10752.qmail@web1704.mail.yahoo.com>; from websoft@yahoo.com on Sun, Mar 04, 2001 at 04:48:49AM -0800 References: <20010304124849.10752.qmail@web1704.mail.yahoo.com>
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[-- Attachment #1 --] Please submit this as a followup to the PR so that it is tracked in the bug DB. Kris On Sun, Mar 04, 2001 at 04:48:49AM -0800, Yifeng Xu wrote: > Hi, > > I am sorry it seems my SMTP server has problems, so I send it via Yahoo! > you may received my several previous sents. > > I think I found the bug about annoying console mouse cursor flicker > problem reported in http://www.freebsd.org/cgi/query-pr.cgi?pr=25439 > by me sometimes ago, the bug is in file > /sys/dev/syscons/syscons.c where function scrn_update will hide > and redraw mouse cursor in a special area: > > .......................... > .......................... > .......................... > .......................... > .......................... > .......................... > ..XXXXXXXXXXXXXXXXXXXXXXXX > XX@....................... > .......................... > > the above image represents a full image of console screen, > every line represents a line on screen, char @ represents > TEXT CURSOR position, area marked with 'X' is an unsafe area, > if mouse cursor is moved into this area, syscons will become > weird, mouse cursor flickers in very fast speed, eats CPU time > up to 20%. > > the following is a patch to fix this problem. I wish > the bug is fixed before FreeBSD 4.3 rolls out. this is a long > standing bug. hurray! > > =============== > > --- syscons.c.orig Sun Mar 4 16:18:59 2001 > +++ syscons.c Sun Mar 4 16:22:33 2001 > @@ -1719,12 +1719,9 @@ > /* remove the previous mouse pointer image if necessary */ > if (scp->status & MOUSE_VISIBLE) { > s = scp->mouse_pos; > - e = scp->mouse_pos + scp->xsize + 1; > + e = scp->mouse_pos; > if ((scp->status & (MOUSE_MOVED | MOUSE_HIDDEN)) > - || and_region(&s, &e, scp->start, scp->end) > - || ((scp->status & CURSOR_ENABLED) && > - (and_region(&s, &e, scp->cursor_pos, scp->cursor_pos) > - || and_region(&s, &e, scp->cursor_oldpos, scp->cursor_oldpos)))) { > + || and_region(&s, &e, scp->start, scp->end)) { > sc_remove_mouse_image(scp); > if (scp->end >= scp->xsize*scp->ysize) > scp->end = scp->xsize*scp->ysize - 1; > > =============== > > David Xu > davidx@viasoft.com.cn > > > __________________________________________________ > Do You Yahoo!? > Get email at your own domain with Yahoo! Mail. > http://personal.mail.yahoo.com/ > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-bugs" in the body of the message > [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE6rBM7Wry0BWjoQKURAmhMAJ48OJLKFlyWalEWYRllciw8f1/IrgCghfi4 83anOvKRaDn9bDxawOynDKg= =YoJb -----END PGP SIGNATURE-----
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