[Letux-kernel] LetuxOS: Kernel: m-latest 5.7-rc6 successful

H. Nikolaus Schaller hns at goldelico.com
Mon May 25 16:59:00 CEST 2020

Hi Stefan,

> Am 24.05.2020 um 22:25 schrieb Stefan Leichter <sle85276 at gmx.de>:
> Am 24.05.20 um 14:51 schrieb H. Nikolaus Schaller:
>> Hi Stefan,
> Hello Nikolaus,
> with the reverted commit 01399e6be1eab63dbd1b9f1f653f74fc8beec8f2 the Pandora boots to the login prompt too.

Ok, good.

Of course it has probably no display then, because there are two display channels defined.
If you want to play or verify you could remove

               display1 = &tv;

from arch/arm/boot/dts/omap3-pandora-common.dtsi

> Attached are the console logs from the 5.7-rc3 kernel from your sever and from my self build kernel with the reverted commit.
> Best regards
> Stefan
> <console-5.7.0-rc3.log.bz2><console-5.7.0-rc3-revert.log.bz2>


I have looked through it and there is no obvious error message
related to the tvout or omapdss.

Instead it is well initialized

[   10.753173] [drm] Initialized omapdrm 1.0.0 20110917 for omapdrm.0 on minor 1
[   11.766357] drm_setup_crtcs_fb: sw_rotations=1
[   11.772399] drm_setup_crtcs_fb: fbcon_rotate_hint=0

and the problem starts later. So it *could* be that the tvout is just
interfering and triggering some other bug.

What I also observe is that the drivers/base/dd.c warning comes much later
with your reverted build! This indicates a race condition between multiple
activities during boot.

It also may be that some driver is accessing out-of bounds array.
I already had that some years ago and it took weeks to track it down.

For me the drivers/base/dd.c problem has unexpectedly disappeared with
letux-5.7-rc6 with no known reason or change.

Maybe you can give letux-5.7-rc6 a try? Either downloaded binary or
self-compiled w/o or with tvout revert.

Best regards,

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