<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - blank screen after drm initialization - trekstor twin 10.1" href="https://bugs.freedesktop.org/show_bug.cgi?id=104807#c12">Comment # 12</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - blank screen after drm initialization - trekstor twin 10.1" href="https://bugs.freedesktop.org/show_bug.cgi?id=104807">bug 104807</a> from <a class="email" href="mailto:hexdump0815@googlemail.com" title="hexdump <hexdump0815@googlemail.com>"> hexdump</a> <pre>hello, i have rebuilt the kernel, keeping all your notes from above in mind, i.e. MFD_AXP20X_I2C=y I2C_DESIGNWARE_PLATFORM=y I2C_DESIGNWARE_BAYTRAIL=y XPOWER_PMIC_OPREGION=y then i rebuilt the initramfs with dracut with the i915 module removed, so that it loads later and the result is that the load order of pwm and i915 is now right (see attached new dmesg). sadly the screen still gets black as soon as the i915 module gets loaded (tested too via booting with init=/bin/sh and loading it by hand on the cmdline). its really funny: in the fully botted system i can still blindly login to the properly running lxde session and even dpms turns off the backlight after a while and pressing a key or mouse button brings it back, but all this just with an empty screen. i ran across <a class="bz_bug_link bz_status_CLOSED bz_closed" title="CLOSED FIXED - Black display once loading the module i915 on Bay trail (DSI/MIPI) - Zen10 tablet" href="show_bug.cgi?id=96923">https://bugs.freedesktop.org/show_bug.cgi?id=96923</a> which seems to be exactly the same problem with no real solution - my tablet has the same innolux 8x12 panel entry in the bios as mentioned in that ticket (maybe the same hardware sold under a different label). attachments coming: updated dmesg with proper pwm & i915 load order, new kernel config and acpidump as requested. a lot of thanks and best wishes - thomas</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> <li>You are the assignee for the bug.</li> </ul> </body> </html>