<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [GLK] no signal after switch resolution from 1080p@23.98" href="https://bugs.freedesktop.org/show_bug.cgi?id=105887#c114">Comment # 114</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - [GLK] no signal after switch resolution from 1080p@23.98" href="https://bugs.freedesktop.org/show_bug.cgi?id=105887">bug 105887</a> from <a class="email" href="mailto:d.scheller.oss@gmail.com" title="Daniel Scheller <d.scheller.oss@gmail.com>"> Daniel Scheller</a> <pre>(In reply to Clinton Taylor from <a href="show_bug.cgi?id=105887#c113">comment #113</a>) > <a href="https://patchwork.freedesktop.org/patch/236192/">https://patchwork.freedesktop.org/patch/236192/</a> > > V4 of the patch has been submitted upstream. This patch will not apply > cleanly to the 4.15 kernel. To apply to 4.15 change INTEL_OUTPUT_DDI to > INTEL_OUTPUT_UNKNOWN Clint, first up, sorry for the hassle regarding OUTPUT_UNKNOWN and OUTPUT_DDI with more current kernels in mind. I applied your latest patch to 4.17.4 sources (slight conflict fixups required, see [1] for the result) and put the DRM_ERROR() back in which prints the current connector type ([2]). On 4.17, the check for _UNKNOWN or _DDI even doesn't seem to be needed anymore, the debug print will always report connector type 64, even directly after boot/hwinit/i915 load. Long story short, the patch still works well. Test debs based on 4.17.4 at [3]. Will keep the latest 4.15 patches/branches around though, as they eventually are candidates for a possible "Ubuntu stable kernel" inclusion when your fix is merged into some linux/drm kernel tree. [1] <a href="https://github.com/herrnst/ubuntu-bionic-kernel/commit/c514d34616e9c54fa07efb316019d0c5fc410cf2">https://github.com/herrnst/ubuntu-bionic-kernel/commit/c514d34616e9c54fa07efb316019d0c5fc410cf2</a> [2] <a href="https://github.com/herrnst/ubuntu-bionic-kernel/commit/2c00ac7bb2208f29573d6e7455126f744536d2a6">https://github.com/herrnst/ubuntu-bionic-kernel/commit/2c00ac7bb2208f29573d6e7455126f744536d2a6</a> [3] <a href="https://github.com/herrnst/ubuntu-bionic-kernel/tree/4.17.4-ubuntu-glktesting7-deb">https://github.com/herrnst/ubuntu-bionic-kernel/tree/4.17.4-ubuntu-glktesting7-deb</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>