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authorBernie Thompson <bernie@plugable.com>2011-08-22 00:35:39 +0400
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2011-08-24 14:12:38 +0400
commit4aa7faffe44bda5db54c214f5b3f789ec805cb9b (patch)
tree31c0ad3af01f47301e9f702c66408b4fe3be0cca /Documentation/fb/udlfb.txt
parent9f811b72c669e29f8c01e258d912254065e58f11 (diff)
downloadlinux-4aa7faffe44bda5db54c214f5b3f789ec805cb9b.tar.xz
udlfb: Enable fbcon access to framebuffer by default
Signed-off-by: Bernie Thompson <bernie@plugable.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'Documentation/fb/udlfb.txt')
-rw-r--r--Documentation/fb/udlfb.txt10
1 files changed, 6 insertions, 4 deletions
diff --git a/Documentation/fb/udlfb.txt b/Documentation/fb/udlfb.txt
index c6d90a6fb901..57d2f2908b12 100644
--- a/Documentation/fb/udlfb.txt
+++ b/Documentation/fb/udlfb.txt
@@ -107,16 +107,18 @@ fb_defio Make use of the fb_defio (CONFIG_FB_DEFERRED_IO) kernel
Disable when running with X server that supports reporting
changed regions via ioctl, as this method is simpler,
more stable, and higher performance.
+ default: fb_defio=1
-console Allow fbcon to attach to udlfb provided framebuffers. This
- is disabled by default because fbcon will aggressively consume
- the first framebuffer it finds, which isn't usually what the
- user wants in the case of USB displays.
+console Allow fbcon to attach to udlfb provided framebuffers.
+ Can be disabled if fbcon and other clients
+ (e.g. X with --shared-vt) are in conflict.
+ default: console=1
shadow Allocate a 2nd framebuffer to shadow what's currently across
the USB bus in device memory. If any pixels are unchanged,
do not transmit. Spends host memory to save USB transfers.
Enabled by default. Only disable on very low memory systems.
+ default: shadow=1
Sysfs Attributes
================