Public bug reported: I am unable to adjust the contrast on an HP laptop, and have not seen any solutions in the forums. Viewing photos with Image Viewer or F-Spot viewer, photos are washed out in bright areas, as if blooming. Same problem for videos under VLC player. In Vista, this also occurred, and the ATI Catalyst software contrast adjustment fixed it. There is a keypad adjustment for brightness, but nothing I can find for contrast. I don't see any reference to a software adjustment under Ubuntu. I have experimented with Gamma, but it does not have the desired effect.
The system is a DV7-1232 with an ATI HD 3200 video card. It is configured as a Vista home premium and Ubuntu Intrepid dual boot. Lspci shows: “01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics] ”. The screen is a 17” brightview. I followed the instructions at https://help.ubuntu.com/community/RadeonDriver#Tweaking%20The%20Driver , but did not modify xorg.conf, as the instructions say “From Ubuntu 7.10 and onwards, the driver and server autodetect most settings. You can often just take away your xorg.conf and it will run fine”. I did try to edit the xorg.conf file, but made an error, and reloaded my backup. My /etc/X11/xorg.conf looks like this: # xorg.conf (X.Org X Window System server configuration file) # # This file was generated by dexconf, the Debian X Configuration tool, using # values from the debconf database. # # Edit this file with caution, and see the xorg.conf manual page. # (Type "man xorg.conf" at the shell prompt.) # # This file is automatically updated on xserver-xorg package upgrades *only* # if it has not been modified since the last upgrade of the xserver-xorg # package. # # Note that some configuration settings that could be done previously # in this file, now are automatically configured by the server and settings # here are ignored. # # If you have edited this file but would like it to be automatically updated # again, run the following command: # sudo dpkg-reconfigure -phigh xserver-xorg Section "Device" Identifier "Configured Video Device" EndSection Section "Monitor" Identifier "Configured Monitor" EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" EndSection Incidentally, I did not notice a contrast setting in the ATI fglrx driver when I experimented with it. ** Affects: ubuntu Importance: Undecided Status: New -- No provision to reduce contrast for a laptop https://bugs.launchpad.net/bugs/342070 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
