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authoremaste <emaste@FreeBSD.org>2014-09-03 14:00:37 +0000
committeremaste <emaste@FreeBSD.org>2014-09-03 14:00:37 +0000
commit41ee2454d86a5d5d93966dd7badebc8a999ed5ba (patch)
tree03c385e91a0992f0d5eadfddee2bac1026443912 /bin/expr
parenta8ec7c36a31697d414a0126c83fea550ce6e0be5 (diff)
downloadFreeBSD-src-41ee2454d86a5d5d93966dd7badebc8a999ed5ba.zip
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MFC r270280 by dumbbell: vt(4): Pause the flush timer while swithing window
This fixes bad looking refresh when switching window: squares instead of text, flashing screen, and so on. In the worst case, vt_flush() came at a very inappropriate timing and the screen was not refreshed at all (leaving squares all over the place). This doesn't fix the flickering of the screen with vt_vga, because the sync signal is temporarily stopped and the video memory is cleared. Sponsored by: The FreeBSD Foundation
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