<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - radeon: allow the user to set a maximum HDMI pixel clock (in MHz) by a kernel parameter" href="https://bugs.freedesktop.org/show_bug.cgi?id=93885#c17">Comment # 17</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - radeon: allow the user to set a maximum HDMI pixel clock (in MHz) by a kernel parameter" href="https://bugs.freedesktop.org/show_bug.cgi?id=93885">bug 93885</a> from <a class="email" href="mailto:alexdeucher@gmail.com" title="Alex Deucher <alexdeucher@gmail.com>"> Alex Deucher</a> <pre>(In reply to Elmar Stellnberger from <a href="show_bug.cgi?id=93885#c16">comment #16</a>) > I have now had a look at the manual of my XFX Radeon R5 230 Core 2GB > graphics card. It is clearly marketed as 4K ready there though the card only > has a DVI, a HDMI and a VGA port. Any claim that 4K would only be possible > over a non existant display port thus needs to be clearly stated as wrong. As Roland mentioned, you could run 4k over dual link DVI. > Once again I wanna ask if anyone here would be ready to help me with a > patch for the driver; or if anyone here could attempt such a patch including > a radeon.hdmimhz parameter without me? Why should it not work? It has proven > in practice for the nouveau driver. As I said before, the hw was not designed to support it. You'll need to hack radeon_dvi_mode_valid() to return MODE_OK and radeon_dig_monitor_is_duallink() to return false.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>