I have experienced the problem with the black screen in battery mode in all my (fairly new) AMD notebooks (bought this year; all AMD Ryzen 5 3500U), running Kubuntu 20.04. As of today the status is as follows:
- Lenovo Ideapad L340-17API (81LY000KGE) (possibly identical to the one in #21). Kernel 5.4.0-42 generic: The problem now seems to be fixed, with all available updates installed (I booted 10 times without power cord: works perfectly). - HP Notebook - 17-ca1010ng (8XM98EA). Only used to boot to black screen from April to June 2020 (100%). Current status: Kernel 5.4.0-42 generic: 50% hit-and-miss rate. For ten boot attempts, about 5 result in a black screen and five in a flawless start. The workaround here is to just keep booting, until the notebook finally starts properly. - HP Notebook - 17-ca1124ng (8KW34EA): The black-screen problem was 100% in evidence in June 2020 with all updates installed. The computer is out of my hands, so I don't know the current status. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1870971 Title: [amdgpu] (X)ubuntu 20.04 boots to black screen on Lenovo Ideapad L340-17API when in battery mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1870971/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
