On Wed, 09 May 2018, Feng Tang <feng.tang@xxxxxxxxx> wrote: > On Tue, May 08, 2018 at 10:30:19PM +0300, Jani Nikula wrote: >> On Wed, 09 May 2018, Feng Tang <feng.tang@xxxxxxxxx> wrote: >> >> Well if it's edp probing, then atm we do need to block since we have >> >> no support for panel hotplugging. And userspace generally no >> >> expectations that built-in panels come&go. async_synchronize_full >> >> making our fbdev code less async than desired is kinda a different >> >> story I think here. First step would be trying to figure out why we >> >> even bother with edp probing on this platform, when the thing isn't >> >> there. Sounds like broken VBT. >> > >> > Hi Daniel, >> > >> > Here are some of the VBT and DPCD related logs on my A3900 (bxt + GEN9 LP) >> > based NUC. but I don't have the knowledge to tell if the VBT is broken :) >> >> Please run current upstream drm-tip when you're suggesting changes to >> upstream code. Looks like you're running at most v4.14. This can't be >> emphasized enough. We can't and won't merge the changes unless they make >> sense with current code. > > Yes, I understand, the patch posted was created right after git-pulling > Linus' tree, and back-ported to test with 4.14 kernel. > >> >> As to vbt, please send me /sys/kernel/debug/dri/0/i915_vbt. > > Sure. as attached Your VBT claims the device has an eDP panel. Does it have one or not? BR, Jani. -- Jani Nikula, Intel Open Source Technology Center _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
