My first try to update from 2020-11 (Kodi 18) was in August, but I experienced a Kernel OOPS after update to v19 and thus reverted the update. Today I made another attempt and updated to 2021-11 (Kodi 19.3). Since a new kernel
5.10.78-2-osmc is involved, I’m crossing fingers that the kernel OOPS is fixed.
I had some trouble setting everything up but it seems to work now. I’d like to share my experiences and ask the remaining questions within this thread.
When powered on, the OSMC logo and then the usual boot messages were shown. I noticed a low resolution of 640x480 on boot. After that, Kodi didn’t show up, just a black screen. I had ssh access and noticed repeating errors about hdmi and cec in the Kodi log. I tried different HDMI cable and direct connection to TV instead of AVR. That helped, Kodi came up, no more errors in the log. But when the AVR was between Pi and TV, I had a 50:50 chance to see Kodi or not. I added the following lines to
hdmi_group=1 hdmi_mode=16 config_hdmi_boost=4
Since this change, all boots reliably resulted in Kodi showing up properly.
CPU usage was high while displaying video; h.264 / 1080p showed 150%-200%. I wandered around the settings and found something new under Settings / Player / Videos. The DRM PRIME decoder seems to be the successor of the proprietary OMX / MMAL options.
The option Enable hardware acceleration / Only allow acceleration for HEVC was the culprit - after disabling it, h.264 was playing with 30%-40% cpu usage.
I’m using Kodi as Tvheadend client. The log periodically shows error messages:
2021-11-27 17:13:25.434 T:8051 ERROR <general>: UpdateFromScraper: No EPG scraper defined for table '' 2021-11-27 17:13:25.435 T:8051 ERROR <general>: Update: Failed to update table ''
After deleting PVR and EPG data, the error messages are gone.
It seems that cpu/gpu memory split handling changed. My OSMC / Pi Config / GPU memory doesn’t show anything.
vcgencmd get_mem gpu shows only 76 MB of GPU memory, 2020-11 had 256 MB. I tried to change that by adding
gpu_mem=256 but nothing changed. It seems that videos are rendered fine, I had no trouble so far, but I’m unsure if this setting is OK.
My OSMC / Pi Config states Codec-Status
MPG2=enabled, WVC1=enabled, but no licenses for MPG2 and WVC1 are shown. I entered them under My OSMC / Pi config / GPU memory.
I’m monitoring cpu usage and temperature on the Pi. I noticed a significant change on an idle system:
OSMC 2020-11: 48°C, load ~0.2, cpu usage ~15%.
OSMC 2021-11: 56°C, load ~0.5, cpu usage ~40%.
Idle means: Kodi is showing the root menu for several hours. I’m worried that 8°C on idle make a difference in terms of lifetime.
I’m keeping an eye on load and temperature because the update is just a few hours old, and maybe the values change on the long term.
Only allow acceleration for HEVC should not be enabled by default, or at least well documented. Maybe I’ve just missed the docs, would appreciate a hint in that case.
Is it OK to leave the GPU memory untouched, resulting in 76 MB?
Are the MPG2 and WVC1 licenses honored on a Pi 3?
Are there any known reasons for the higher idle load?