<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt"><div class="" style=""><font class="" style="" color="black" face="Verdana,Arial,Helvetica" size="2"><font class="" style="" color="black" face="Verdana,Arial,Helvetica" size="2">> Actually, after re-reading the post, the correct answer for <br class="" style="" clear="none">> your particular problem may be to add <br class="" style="" clear="none"> > <br class="" style="" clear="none"> > Option "UseHotplugEvents" "False" <br class="" style="" clear="none"> ><br class="" style="" clear="none">> to your xorg.conf (or equivalent) file. <br class="" style="" clear="none"></font></font></div><div class="" style="color:rgb(0, 0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;"><br class="" style="" clear="none"></div><div
class="" style="color:rgb(0, 0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;"><font class="" style="" color="black" face="Verdana,Arial,Helvetica" size="2"><font class="" style="" color="black" face="Verdana,Arial,Helvetica" size="2">Thanks
Gary, I'd not come across that before. I tried it (and lots of other
fiddling with xorg.conf) over the weekend and unfortunately it doesn't
seem to work. Here's my current /etc/X11/xorg.conf file:</font></font></div><div class="" style="color:rgb(0, 0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;"><br class="" style="" clear="none"></div><div class="" style="color:rgb(0, 0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;"> Section "Monitor"<br class="" style="" clear="none"> Identifier "HDMI-0"<br class="" style="" clear="none"> VendorName "LG"<br class="" style="" clear="none"> ModelName "42LM620T"<br class="" style="" clear="none"> Option "UseHotplugEvents" "false"<br class="" style=""
clear="none"> Option "Primary" "true"</div><div class="" style="color:rgb(0, 0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;"> Option "DPMS" "false"<br class="" style="" clear="none"> EndSection<br class="" style="" clear="none"><br class="" style="" clear="none"> Section "Screen"<br class="" style="" clear="none"> Identifier "Screen0"<br class="" style="" clear="none"> Monitor "HDMI-0"<br class="" style="" clear="none"> EndSection<br class="" style="" clear="none"></div><div class="" style="color:rgb(0,
0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;"><br class="" style="" clear="none"></div><div class="" style="color:rgb(0, 0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;">which appears to be detected:</div><div class="" style="color:rgb(0, 0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;"><br class="" style="" clear="none"></div><div class="" style="color:rgb(0, 0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;"> ~$ grep
"xorg.conf" /var/log/Xorg.0.log<br class="" style="" clear="none"> [ 1114.119] (==) Using config file: "/etc/X11/xorg.conf"<br class="" style="" clear="none"></div><div class="" style="color:rgb(0, 0, 0);font-size:13px;font-family:Verdana, Arial, Helvetica;background-color:transparent;font-style:normal;"><br class="" style="" clear="none"></div><font class="" style="" size="2">but isn't having the desired effect.<br class="" style="" clear="none"><br class="" style="" clear="none">I suspect that the "</font>UseHotplugEvents"
option is NVidia specific, as I can't find any mention of it in the
manpages for xorg.conf or radeon . It looks like EDID options (like
"UseEDID") are nvidia specific too, so xorg.conf with ATI is looking
like a dead-end :(<br class="" style="" clear="none"><br class="" style="" clear="none">I'll
keep searching and trying things (including your EDID kernel
suggestion), but in the end I may have no option but to revert back to a
legacy kernel and proprietary ATI driver that
supports my <font class="" style="" color="black" face="Verdana,Arial,Helvetica" size="2"><font class="" style="" color="black" face="Verdana,Arial,Helvetica" size="2">Radeon HD 4250. In the meantime any other so</font></font>lutions would be most welcome. Thanks,<br style="" class="" clear="none"><div style="" class=""><span style="" class=""></span></div></div></body></html>