Messages in this thread | | | Date | Sun, 2 Feb 2003 19:57:44 +0000 | From | Russell King <> | Subject | Re: fbcon scrolling madness + fbset corruption |
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On Mon, Jan 20, 2003 at 09:29:38AM +0800, Antonino Daplas wrote: > fb_pan_display() does not test for YWRAP. Can you try this?
This doesn't appear to solve the ywrap problem - I still get places where the screen doesn't scroll. I decided to write a small program to dump out the contents of fb_var_screeninfo, and where stuff goes horribly wrong:
bash-2.04# ./tst Visible: 1280x1024 Virtual: 1280x1632 BPP : 8 Offset : +0+2352 bash-2.04# ./tst Visible: 1280x1024 Virtual: 1280x1632 BPP : 8 Offset : +0+2392
Up to the point where it goes wrong:
bash-2.04# ./tst Visible: 1280x1024 Virtual: 1280x1632 BPP : 8 Offset : +0+528 bash-2.04# ./tst Visible: 1280x1024 Virtual: 1280x1632 BPP : 8 Offset : +0+568 bash-2.04# ./tst Visible: 1280x1024 <--- this is the last line on the screen Virtual: 1280x1632 BPP : 8 Offset : +0+608 bash-2.04#
So it looks like something isn't limiting the yoffset in the generic console layer; an xoffset of 2392 when the maximum virtual Y is 1632 is just nonsense.
I also noticed an additional problem with fbcon: if I change the resolution using fbset, the change occurs, except I end up with corrupted mess on the screen (the reminents of the original display.) The shell prompt is nowhere to be seen.
Hitting ^L clears the screen and then the shell prompt is visiable.
-- Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux http://www.arm.linux.org.uk/personal/aboutme.html
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