[Bug 30606] slow, laggy, jerky scrolling in chromium that uses 100% cpu

[Dr. David Alan Gilbert]

* bugzilla-daemon at freedesktop.org (bugzilla-daemon at freedesktop.org) wrote:
> https://bugs.freedesktop.org/show_bug.cgi?id=30606
> 
> --- Comment #14 from Gerwin <gerwin_kramer at hotmail.com> 2010-10-06 09:48:12 PDT ---
> (In reply to comment #13)
> 
> > hmm can't reproduce this behavior anymore (I closed chromium and started it
> > again)
> 
> Sorry for all the comments, but I found out why I had this fast scrolling. It
> was because I was testing WebGL. 
> 
> To reproduce fast scrolling:
> 
> 1. open chromium, go to
> http://dev.chromium.org/developers/demos-gpu-acceleration-and-webgl
> 
> 2. scroll, the page scrolls slow
> 
> 3. click on the link to the aquarium demo (not the picture, that will open a
> new tab)

and for me that hangs and gives me the following in the log:

[ 2615.582036] radeon 0000:07:00.0: z/stencil buffer too small (0x3FFFFC01 1048576 1 4 -> 268435456 have 4096)
[ 2615.582042] radeon 0000:07:00.0: r600_packet3_check:1108 invalid cmd stream 498
[ 2615.582045] [drm:radeon_cs_ioctl] *ERROR* Invalid command stream !

Dave
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