From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Hounschell Subject: Re: VERY slow scrolling on radeon graphics card: debugging a timing issue? Date: Thu, 23 Dec 2010 07:53:11 -0500 Message-ID: <4D134637.9020709@compro.net> References: <4D0FC36D.9010304@msgid.tls.msk.ru> <20101222020041.c168bf87.akpm@linux-foundation.org> <4D11D939.9080808@cfl.rr.com> <1293089117.19556.109.camel@thor.local> Reply-To: markh@compro.net Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1293089117.19556.109.camel@thor.local> Sender: linux-kernel-owner@vger.kernel.org To: =?UTF-8?B?TWljaGVsIETDpG56ZXI=?= Cc: dmarkh@cfl.rr.com, Andrew Morton , Michael Tokarev , Linux-kernel , dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org On 12/23/2010 02:25 AM, Michel D=C3=A4nzer wrote: > On Mit, 2010-12-22 at 05:55 -0500, Mark Hounschell wrote:=20 >> >> I also see this very problem on several machines I have with radeon = video. >> For me the worst part is using vi in a konsole. Moving the cursor ar= ound >> is so slow that I just can't use these machines directly and have to= ssh >> into them from another machine just to work on them. >=20 > That's not the same problem as the one described by Michael, which is > about the console on virtual terminals different from X. >=20 > For your problem, try choosing a different font (a fontconfig one > instead of a legacy X one) in konsole. >=20 >=20 Hum, but I do in fact see the same thing he sees on a VT. A dmesg command from a VT takes around 20 seconds to display. The same in a konsole takes a fraction of a second. So your probably right that my vi problem in a konsole is a different issue. I do see the same thing as the OP does though. I just figured they were probably related. Changing fonts doesn't change anything though. I normally use the "Misc Console" font FWIW. Regards Mark