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-rw-r--r--man/r128.man8
1 files changed, 5 insertions, 3 deletions
diff --git a/man/r128.man b/man/r128.man
index 5168a48e..32bbaae7 100644
--- a/man/r128.man
+++ b/man/r128.man
@@ -142,9 +142,11 @@ on other architectures.
.PP
.B Dualhead Note:
-Changing modes on crtc2 in dualhead mode causes problems in
-some configurations. The workaround is to switch the mode, change to another
-VT, then change back.
+The video BIOS on some laptops interacts strangely with dualhead.
+This can result in flickering and problems changing modes on crtc2.
+If you experience these problems try toggling your laptop's video
+output switch (e.g., fn-f7, etc.) prior to starting X or switch to
+another VT and back.
.SH "SEE ALSO"
__xservername__(__appmansuffix__), __xconfigfile__(__filemansuffix__), xorgconfig(__appmansuffix__), Xserver(__appmansuffix__), X(__miscmansuffix__)