I have Viewsonic VP930 monitor. After upgrading to 177.70 ddccontrol stopped detecting (and working with) this monitor:
ddccontrol version 0.4.2
Copyright 2004-2005 Oleg I. Vdovikin (email@example.com)
Copyright 2004-2006 Nicolas Boichat (firstname.lastname@example.org)
This program comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of this program under the terms of the GNU General Public License.
Probing for available monitors....I/O warning : failed to load external entity "/usr/share/ddccontrol-db/monitor/VSCE41B.xml"
Document not parsed successfully.
Detected monitors :
- Device: dev:/dev/i2c-2
DDC/CI supported: No
Monitor Name: VESA standard monitor
Input type: Digital
No monitor supporting DDC/CI available.
If your graphics card need it, please check all the required kernel modules are loaded (i2c-dev, and your framebuffer driver).
same thing happens in Windows Vista 64 - PerfectSuite cannot detect my monitor after upgrading to 177.39
everything works with 173.14.12 driver
It still don't work with 177.78 driver in linux