Strange indeed, On my MBP(*), there is no visible lag. Using my touchpad's scroll down (two finger gesture), I can go from start of the Guide de l'utilisateur to its end in 14 seconds. Lyx 2.0.2, standard binary downloaded from Lyx.org (LyX-2.0.2+qt4-cocoa.dmg).
Maybe I have not correctly understood your test? (*) 15" screen, 8GB RAM, 2.4GHz Core i7, OSX 10.7.2. 2012/1/4 James Sutherland <[email protected]> > On Tue, Jan 3, 2012 at 5:08 PM, Jerry <[email protected]> wrote: > >> >> On Jan 3, 2012, at 4:51 PM, Steve Litt wrote: >> >> > On Monday, January 02, 2012 10:12:47 PM Jerry wrote: >> >> I'm evaluating LyX for a major project and am mightily impressed. >> >> >> >> However, there is one problem that stands out: Scrolling the main >> >> LyX window is excruciatingly slow. I'm using LyX 2.0.2 and OS X >> >> 10.6.8. It doesn't seem to matter how I scroll--two-finger swipe >> >> on MacBook Pro trackpad or using the thumb bar or clicking on the >> >> normal scrolling arrows. When scrolling rather fast or using the >> >> two-finger "ballistic scrolling", there are large jumps between >> >> screen updates; sometimes the jump is more than an entire >> >> screenful so there is little hope of reliably spotting things as >> >> they go by. While scrolling, processor usage goes to 100% >> >> >> >> Hmmm. I suspect that the problem is worse on my machine because even >> scrolling small amounts (a few lines or a couple of pages) is so >> laggy/jumpy that it is easily noticeable/annoying--hard to track features >> as they go by. >> >> Scrolling large distances in a short time pretty much takes place as fast >> as scrolling a native application; it's just that to get the job done in >> roughly the same amount of time, there are huge jumps. >> >> In an earlier post in this thread I noted that 2.0.1 was much better in >> this regard (I just tried 2.0.1 a couple hours ago), so at least in part, >> this is looks like a recent development. >> >> Jerry > > > > FWIW, I have been noticing this issue on my Mac as well with LyX 2.0.2 > (binary installation) and Mac OSX 10.7.2. It has occurred for me with > small documents as well as large ones. Mouse-scrolling lags > substantially. > > I just tried it on another Mac system running OSX 10.6.8 and LyX 2.0.0. > No problems there. I then updated to LyX 2.0.2 on 10.6.8 and there were > no problems with that either. > > So it appears that this issue is unique to LyX on OSX 10.7.x? > > James > > -- Prof. Murat Yildizoglu Université Montesquieu Bordeaux IV GREThA (UMR CNRS 5113) Avenue Léon Duguit 33608 Pessac cedex France Bureau : F-331 [email protected] http://yildizoglu.info http://www.twitter.com/yildizoglu
