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Antonino A. Daplas 2ae8547775 vgacon: disallow console operations when in KD_GRAPHICS mode ... Reported by James Pearson as: boot to run level 3 if not root, then make sure /dev/console is writeable login and type: setterm -blank 0 start X type into an xterm: while true; do echo "" > /dev/console; usleep 100000; done while the above loop is running switch to the text console and back again (Ctrl-Alt-F1 then Ctrl-Alt-F7) ... and the screen will be shifting (and wrapping) to the left. This problem stems from continuously writing text to the system console (which is in KD_TEXT mode) while the foreground console is in KD_GRAPHICS mode. Somewhere along the way, console printing got confused and omitted the KD_GRAPHICS/KD_TEXT test. Thus, vgacon attempted to scroll the screen of X, which causes X to shift. Fix by disallowing vgacon to touch the hardware when the vc is in KD_GRAPHICS mode. A definitive fix entails a full audit of the console code. Signed-off-by: Antonino Daplas <adaplas@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		18 years ago
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Kconfig	video: Disable vgacon for SuperH.	19 years ago
Makefile	…
bitblit.c	…
dummycon.c	…
fbcon.c	fbcon: check console-fb mapping in fbcon_get_requirement	18 years ago
fbcon.h	[PATCH] fbdev modedb: make more pointer parameters const	18 years ago
fbcon_ccw.c	[PATCH] fbcon:: make 3 functions static	19 years ago
fbcon_cw.c	[PATCH] fbcon:: make 3 functions static	19 years ago
fbcon_rotate.c	…
fbcon_rotate.h	…
fbcon_ud.c	[PATCH] fbcon:: make 3 functions static	19 years ago
font_6x11.c	…
font_7x14.c	…
font_8x8.c	…
font_8x16.c	…
font_10x18.c	…
font_acorn_8x8.c	…
font_mini_4x6.c	…
font_pearl_8x8.c	…
font_sun8x16.c	…
font_sun12x22.c	…
fonts.c	fbcon: font setting should check limitation of driver	18 years ago
mdacon.c	vt: add color support to the "underline" and "italic" attributes	18 years ago
newport_con.c	…
prom.uni	…
promcon.c	vt: add color support to the "underline" and "italic" attributes	18 years ago
softcursor.c	[PATCH] softcursor.c: avoid unaligned accesses	18 years ago
sticon.c	vt: add color support to the "underline" and "italic" attributes	18 years ago
sticore.c	fbcon: font setting should check limitation of driver	18 years ago
tileblit.c	…
vgacon.c	vgacon: disallow console operations when in KD_GRAPHICS mode	18 years ago