On Fri, Apr 10, 2026 at 03:51:12PM +0200, David Heidelberg wrote: > On 18/03/2026 15:47, Dmitry Baryshkov wrote: > > On Tue, Mar 17, 2026 at 11:12:35PM +0100, David Heidelberg via B4 Relay > > wrote: > > > From: Petr Hodina <[email protected]> > > > > > > Currently the panel driver for tianma is broken. > > > Disable MDSS to prevent DRM taking over the framebuffer. > > > > I'd still hope that somebody can get it to work. I'd start by using > > prepare_prev_first. Sumit reported the panel as working in 2020 and I > > have no doubts that it was the case. Another option migt be something > > related to the dispcc (see my [1]). > > Sadly, the prepare_prev_first didn't solve the issue. The framebuffer -> > MDSS takover happens, but at greetd (login) loading screen goes black and > never restores. > > Will need more work.
Do you see a console _while_ it boots, after the handover? I'd check the mode programming. Maybe, disabling panel reset would also (temporarily) help. > > David> > > [1] > > https://lore.kernel.org/linux-arm-msm/[email protected]/ -- With best wishes Dmitry
