<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [NV1F] Flickering screen on Geforce 4" href="https://bugs.freedesktop.org/show_bug.cgi?id=54587#c35">Comment # 35</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [NV1F] Flickering screen on Geforce 4" href="https://bugs.freedesktop.org/show_bug.cgi?id=54587">bug 54587</a> from <a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> Ilia Mirkin</a> <pre>(In reply to Patrick McMunn from <a href="show_bug.cgi?id=54587#c34">comment #34</a>) > I wonder if this bug may either be related to, or may actually be the same > as, <a class="bz_bug_link bz_status_NEW " title="NEW - Screen flicker when using display with incorrect EDID" href="show_bug.cgi?id=61537">bug 61537</a>. I also have this same issue with a PC using an nVidia GeForce > 4 MX IGP, and I know that the monitor attached to it has a bad EDID. I > suspect Vesa may also have a monitor with a bad EDID; that would explain why > his monitor's resolution was not correctly detected by Xorg (see comment > #12). > > I applied the above patch to Linux 4.4.11 sources, recompiled my kernel, and > rebooted. The problem is not completely fixed, but it is noticeably > improved. Whereas before the whole screen would intermittently jump, now > there are simply random flashes of horizontal lines on random places on the > screen. I generally run this box as a light-duty server, so I mainly ssh > into it from my desktop, and I didn't boot into a GUI for testing. I just > booted it and observed the text console. > > I wouldn't consider this patch a fix, but it is perhaps a mitigation. In any > case, since I suspect that this may actually be the same as <a class="bz_bug_link bz_status_NEW " title="NEW - Screen flicker when using display with incorrect EDID" href="show_bug.cgi?id=61537">bug 61537</a>, it > would probably be wise to discuss with other devs, per Martin Peres' > comment, before submitting any changes to the tree. Thanks for testing. The other bug you reference is on very different hardware (G80+) which has an *entirely* different display unit. The patch I wrote was based on a few observations of the old xf86-video-nv code compared to nouveau. There were other differences, but those seemed like the biggest ones. Sounds like some of the other ones still matter though if you're still seeing flickering.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>