<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Lenovo ThinkPad E455 (Kaveri A10-7300): Blank built-in screen with radeon kms driver" href="https://bugs.freedesktop.org/show_bug.cgi?id=90320#c10">Comment # 10</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Lenovo ThinkPad E455 (Kaveri A10-7300): Blank built-in screen with radeon kms driver" href="https://bugs.freedesktop.org/show_bug.cgi?id=90320">bug 90320</a> from <a class="email" href="mailto:sibradzic@gmail.com" title="Samir Ibradžić <sibradzic@gmail.com>"> Samir Ibradžić</a> <pre>(In reply to N.Leiten from <a href="show_bug.cgi?id=90320#c8">comment #8</a>) > Created <a href="attachment.cgi?id=115731" name="attach_115731" title="FHD Panel Datasheet.">attachment 115731</a> <a href="attachment.cgi?id=115731&action=edit" title="FHD Panel Datasheet.">[details]</a> > FHD Panel Datasheet. > > Due this datasheet the panel looks the same as for DP configuration > comparing whith N133HSE-EA1 (asus u38n) panel. So it needs 2 lanes to init > video stream. > > As for your dmesg, I see problem in dp_aux_ch and training procedure (the > voltage and emphasis is 0 which is not right at this point). Need to debug > further when I publish my patch and if it not help. > > One more thing, do you have FullHD (1920x1080) panel or WHD (1366x768) one. > Because on Lenovo site I see Thinkpad e455 base model with WHD. The last one > need only 1 DisplayPort lane to work. Are you saying these may be an issue: [drm:radeon_dp_aux_transfer_native] dp_aux_ch flags not zero: 00000201 [drm:drm_dp_i2c_do_msg] transaction failed: -5 ?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>