xserver's VESA driver's VBE (Vesa BIOS Extensions) code includes a PanelID probe, which can get a monitor's native resolution. From this, using CVT formulas, it derives horizontal sync rate and a vertical refresh rate ranges. It however, only derives the upper bounds of the ranges, and the lower bounds cannot de derived. By default, they are set to hardcoded constants which represent the lowest supported resolution: 640x480. The constants in vbe.c however, were not actually derived from forulas, but carried over from other code from the bad old days, and are not relevant to flat panel displays. This caused, for example, EEEPC701's panel, with a native resolution of 800x480, to end up with a upper bound of the horizontal sync rate that was lower than the hardcoded lower bound, which of course broke things. These numbers have been rederived using both my own CVT tool based on xf86CVTMode(), and using the provided 'cvt' tool that comes with xserver. Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com> |
||
---|---|---|
composite | ||
config | ||
damageext | ||
dbe | ||
dix | ||
doc | ||
exa | ||
fb | ||
glx | ||
hw | ||
include | ||
m4 | ||
man | ||
mi | ||
miext | ||
os | ||
randr | ||
record | ||
render | ||
test | ||
Xext | ||
xfixes | ||
Xi | ||
xkb | ||
.gitignore | ||
autogen.sh | ||
configure.ac | ||
COPYING | ||
devbook.am | ||
docbook.am | ||
fix-miregion | ||
fix-miregion-private | ||
fix-patch-whitespace | ||
fix-region | ||
Makefile.am | ||
manpages.am | ||
README | ||
xorg-server.m4 | ||
xorg-server.pc.in | ||
xserver.ent.in |
X Server The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into. Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders. For a comprehensive overview of X Server and X Window System, consult the following article: http://en.wikipedia.org/wiki/X_server All questions regarding this software should be directed at the Xorg mailing list: http://lists.freedesktop.org/mailman/listinfo/xorg Please submit bug reports to the Xorg bugzilla: https://bugs.freedesktop.org/enter_bug.cgi?product=xorg The master development code repository can be found at: git://anongit.freedesktop.org/git/xorg/xserver http://cgit.freedesktop.org/xorg/xserver For patch submission instructions, see: http://www.x.org/wiki/Development/Documentation/SubmittingPatches For more information on the git code manager, see: http://wiki.x.org/wiki/GitPage