I have a “brand new” Pinephone Manjaro Phosh Beta 4 and massive stability issues. The screen always goes black when in use and can be reactivated by logging in again. I suspect that the device is overclocked and therefore tried to set with a u-boot patch to a lower speed. There is a description in the Pinephone forum. Unfortunately it is unsuccessful.
Alternatively, I tried Mobian and Ubuntu Touch. Mobian (phosh) shows the same behavior. UT, however, runs stably (!), but the call function is very unreliable and UT is not well maintained.
The problem is a bit difficult to describe.
My test application for Manjaro Phosh and Mobian is Firefox. This program is the quickest way to find the bug. Firefox starts (after flashing first time) and shows its standard intro. After entering a URL, the page loads and then the screen goes dark. There is no longer any visible reaction. Typing is still accepted, but completely in the dark. Switching off and on shows me the login again. After logging in, the screen goes black again. From this point on, the screen goes dark in almost all programs during interactions (tapping, swiping …). This has been since the first moment and switched on since I got the phone.
Remedy: Blind tap on the lower edge of the black screen to minimize the program. Switching off and on shows the login screen again. After logging in, the screen is on again and the program is minimized in the upper area. I can only close it because opening it again causes a black screen.
So my hope is this thread here. I tested the hardware with the test image from the Pine64 website. All functions of the phone have been completed successfully.
What have I done until now?
I have flashed some * .bin files on the SD card and/or in the internal memory, the highest, medium and lowest speed to see an effect. After flashing (with dd …) with the files from Pinephone website, the phone no longer starts. The LED only blinked red (with Manjaro Phosh Beta 4), with Mobian only green.
In a Manjaro Phosh Image (developer 2021-01-02) I found 3 * .bin files (u-boot-sunxi-with-spl-pinephone-492.bin, u-boot-sunxi-with-spl-pinephone- 552.bin, u-boot-sunxi-with-spl-pinephone-624.bin). I was able to successfully flash the 492 file. However, I cannot see any effect. I still get the black screen.
I flashed it via jumpdrive. “lsblk” showed me the phone memory as “sdb”.
In a root terminal : “dd if = u-boot-sunxi-with-spl-pinephone-492.bin of = / dev / sdb bs = 8k seek = 1”
I’m not sure if I did everything right? Any help is welcome. At the moment the phone is unusable.
References (random chrashes):