[Letux-kernel] compile problems

Andreas Kemnade andreas at kemnade.info
Tue Jul 24 07:29:12 CEST 2018


On Mon, 23 Jul 2018 10:02:47 +0200
"H. Nikolaus Schaller" <hns at goldelico.com> wrote:

> Hi Andreas,
> I now have merged & built letux-4.18-rc6 (not yet pushed).
> 
> > Am 23.07.2018 um 07:47 schrieb Andreas Kemnade <andreas at kemnade.info>:
> > 
> > On Sun, 22 Jul 2018 22:17:05 +0200
> > "H. Nikolaus Schaller" <hns at goldelico.com> wrote:
> > 
> >   
> >>> [    9.171325] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> >>> [    9.178253] [drm] No driver support for vblank timestamp query.
> >>> [    9.198577] omapdrm omapdrm.0: Tiled buffers require DMM
> >>> [    9.207733] fbcon_init: detected unhandled fb_set_par error, error code -16  
> > 
> > = display problems!  
> >>> [    9.207733] Console: switching to colour frame buffer device 60x40
> >>> [    9.227874] omapdrm omapdrm.0: fb0: omapdrm frame buffer device  
> 
> Haven't seen this:
> 
At least it is not always there with the rc6.

> [    7.691253] wwan_on_off_set_power: state 1
> [    7.695892] wwan_on_off_set_power: done
> [    7.764709] wwan_on_off_probe: successfully probed
> [    8.408447] omapdrm omapdrm.0: DMM not available, disable DMM support
> [    8.460174] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
> [    8.502227] [drm] No driver support for vblank timestamp query.
> [    8.508758] omapdrm omapdrm.0: Tiled buffers require DMM
> [    8.615325] Console: switching to colour frame buffer device 60x40
> [    8.691711] omapdrm omapdrm.0: fb0: omapdrm frame buffer device
> [    8.716918] cfg80211: Loading compiled-in X.509 certificates for regulatory database
> [    8.726501] [drm] Initialized omapdrm 1.0.0 20110917 for omapdrm.0 on minor 0
> [    8.767608] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
> [    8.785064] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
> [    8.796966] cfg80211: failed to load regulatory.db
> 
> >>> [    9.234252] ---[ end trace 8c96d4db1da6a489 ]---
> >>> [    9.262847] [drm] Initialized omapdrm 1.0.0 20110917 for omapdrm.0 on minor 0
> >>> [    9.418731] cfg80211: Loading compiled-in X.509 certificates for regulatory database
> >>> [    9.486663] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
> >>> [    9.543640] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
> >>> [    9.571105] cfg80211: failed to load regulatory.db  
> 
> And I haven't seen the iio related error. Maybe something spurious or
> is it repeatable for you? Then it could be an effect based on different
> boot procedure (assuming you boot through serial/usb - I did boot from
> U-Boot with Josuas and your DFU fixes in NAND and kernel on µSD).
> 
My X setup tries to talk with the accelerometer but then ignores it. Maybe that is different

[   246.821] (II) config/udev: Adding input device accelerometer-iio-input-bridge (/dev/input/event6)
[   246.821] (II) No input driver specified, ignoring this device.
[   246.821] (II) This device may have been added with another device file.
[   246.822] (II) config/udev: Adding input device accelerometer-iio-input-bridge (/dev/input/js0)
[   246.822] (II) No input driver specified, ignoring this device.
[   246.822] (II) This device may have been added with another device
file.

Maybe that is not the case in your setup. xxd /dev/input/event6 (or wherever the bridge is) spits out
data in earlier kernels but not in 4.18-rc6.

Regards,
Andreas
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