<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Rx480 doesn't output properly onto z27q at 5120x2880" href="https://bugs.freedesktop.org/show_bug.cgi?id=99801#c25">Comment # 25</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Rx480 doesn't output properly onto z27q at 5120x2880" href="https://bugs.freedesktop.org/show_bug.cgi?id=99801">bug 99801</a> from <a class="email" href="mailto:mtreinish@kortar.org" title="Matthew Treinish <mtreinish@kortar.org>"> Matthew Treinish</a> <pre>(In reply to Jean-Yves Avenard from <a href="show_bug.cgi?id=99801#c21">comment #21</a>) > Adding some likely unhelpful info. > But I've had similar (though not the same) problem since I got this screen. > However, unlike most comments, I do not get two steady, mis-aligned image on > each half of the screen. > > The effect is an enormous flickering, mostly on the left half, with colour > cycling. The screen internal menu can no longer be displayed. > > Any long exposure to that mode would cause seizure to any healthy person. > > The only work around to get out of that mode is to disable one of the screen > and set the remaining half to 2560x1440 resolution only. > > Typically, after entering this corrupted mode, the screen will flicker > continuously sometimes for hours. One day, I even thought I broke the screen > as it was still flickering one day later and got HP to replace it. > The new model did that same thing (actually all 4 HPz27q I got, as it took a > while to get one without stuck pixels) > > I get the same effect with both a mac pro 2013 (dual AMD D500 aka AMD 7800) > or with a PC with an AMD Vega 64. > > I'll take a picture of what it looks like and upload. FWIW, this description is more or less exactly what I'm experiencing on my display as well. (although I never tried the screen internal menu piece) I probably just didn't do a good job taking a picture and/or describing it.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>