On 2020-07-31 10:50, Andreas Beckmann wrote:
I'd guess that bbswitch needs to be adusted to the corresponding kernel
changes.
I just compared the log output to the bbswitch source code and from what
I can tell:
- There is logic to always enable the discrete graphics card just before
standby:
> enable the device before suspend to avoid the PCI config space from
being saved incorrectly
- This logic does not seem to be invoked:
from 5.6:
[ 37.338585] Filesystems sync: 3.833 seconds
[ 37.339219] (NULL device *): firmware: direct-loading firmware
regulatory.db
[ 37.339222] (NULL device *): firmware: direct-loading firmware
regulatory.db.p7s
[ 37.339918] (NULL device *): firmware: direct-loading firmware
iwlwifi-8265-36.ucode
[ 37.340208] (NULL device *): firmware: direct-loading firmware
i915/kbl_dmc_ver1_04.bin
[ 37.340311] bbswitch: enabling discrete graphics
[ 37.493527] Freezing user space processes ... (elapsed 0.003 seconds)
done.
[ 37.496725] OOM killer disabled.
[ 37.496727] Freezing remaining freezable tasks ... (elapsed 0.001
seconds) done.
from 5.7:
[ 42.399698] Filesystems sync: 2.100 seconds
[ 42.400331] (NULL device *): firmware: direct-loading firmware
regulatory.db.p7s
[ 42.400338] (NULL device *): firmware: direct-loading firmware
regulatory.db
[ 42.401065] (NULL device *): firmware: direct-loading firmware
iwlwifi-8265-36.ucode
[ 42.401339] (NULL device *): firmware: direct-loading firmware
i915/kbl_dmc_ver1_04.bin
[ 42.523291] Freezing user space processes ... (elapsed 0.003 seconds)
done.
[ 42.526435] OOM killer disabled.
[ 42.526436] Freezing remaining freezable tasks ... (elapsed 0.001
seconds) done.
The next step would probably be to look if this
"register_pm_notifier(&nb)" is intended to not work and there is a
replacement, or what is happening there.
--
Kind regards,
Felix Dörre
