<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - legacy modesetting removal breaks CLE266" href="https://bugs.freedesktop.org/show_bug.cgi?id=96397#c15">Comment # 15</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - legacy modesetting removal breaks CLE266" href="https://bugs.freedesktop.org/show_bug.cgi?id=96397">bug 96397</a> from <a class="email" href="mailto:kevinbrace@gmx.com" title="Kevin Brace <kevinbrace@gmx.com>"> Kevin Brace</a> <pre>(In reply to Xavier Bachelot from <a href="show_bug.cgi?id=96397#c11">comment #11</a>) Hi Xavier, > I've reduced the needed changes to both 3d5.6b bit 7 and 3d5.6c bit 0. > Initial registers setting is 3d5.6b = 0x84 and 3d5.6c = 0x01. > Working registers setting is 3d5.6b = 0x04 and 3d5.6c = 0x00. > > According to CX700 documentation, the older chipset with doc available : > > 6b[7:6] is "First Display Channel Clock Mode Selection" > 0x: Normal > 1x: Division by 2 > > 6c[0] is "LCDCK Source Selection" > 0: LCDCK PLL output clock > 1: LCDCK PLL reference clock Do you think 3X5.6C[0] is even a factor here? LCDCK implies IGA2, but we are dealing with only IGA1 in this situation. I suspect 3X5.6B[7:6] is suspect here. I know that EPIA-M BIOS has a way to specify which type of display devices are connected to the mainboard. What is the current setting you have? Is it set to CRT + TV setting? Looking at the OpenChrome source code, it appears that division by 2 mode is used when VT1622(A) or VT1623 are used. However, in your case, OpenChrome appears not to be going through the VIA TV encoder initialization code within OpenChrome. Is this a situation where OpenChrome is not initializing the register unless the TV encoder is actively being used, and OpenChrome is effectively depending on the BIOS to set the register? It is my speculation that if EPIA-M BIOS is set to CRT + TV mode, this register field in question gets set by BIOS, but under the circumstance you have encountered, it is not being initialized by OpenChrome. The only exception is if you tried to use TV with OpenChrome, but when I tried this several months ago, it caused a hang (lockup) when I connected a TV set to EPIA-M. However, the TV out hardware is working since the screen behaves normally when I turn the hardware on (the stuff on the TV is cloned with the VGA out).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>