<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Flickering Screen on Dell XPS13 9350" href="https://bugs.freedesktop.org/show_bug.cgi?id=94593#c43">Comment # 43</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - Flickering Screen on Dell XPS13 9350" href="https://bugs.freedesktop.org/show_bug.cgi?id=94593">bug 94593</a> from <a class="email" href="mailto:nhellwege@gmail.com" title="nhellwege@gmail.com">nhellwege@gmail.com</a> <pre>(In reply to tranceash from <a href="show_bug.cgi?id=94593#c38">comment #38</a>) > looks like a power management issues dating 8 months back, Also happened on > the broadwell systems <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [bdw edp] Screen Flickering" href="show_bug.cgi?id=91393">https://bugs.freedesktop.org/show_bug.cgi?id=91393</a>. > This makes any linux system a pain to work because of this integrated gpu > driver . Skylake has been out for 7 months and we still have problems I am starting to believe that the common error [drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU pipe A FIFO underrun is not actually responsible for the flicker. To be more precise, the FIFO underrun may result in conjunction with a flicker, but is not a unique indication. I am currently bisecting the kernel and right now I am on commit 5ffd4da+. This commit does show the FIFO underun but not at the same time the screen turns completely black for a split second. I assume the flicker (screen completely black for a split second) is not directly mapped by the FIFO underrun. Reading <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [bdw edp] Screen Flickering" href="show_bug.cgi?id=91393">https://bugs.freedesktop.org/show_bug.cgi?id=91393</a>, I think our bug is at least related, if not identical.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>