as a last resort, what kernel is that ubuntu 20.04 running? I'd advise to use the HWE Kernel at least, maybe even test latest kernel.org LTS release. HTH -- Sven Kieske Senior Cloud Engineer Mail: kieske at osism.tech Web: https://osism.tech OSISM GmbH Teckstraße 62 / 70190 Stuttgart / Deutschland Geschäftsführer: Christian Berendt Unternehmenssitz: Stuttgart Amtsgericht: Stuttgart, HRB 756139