Those errors aren't printed when booting with hdmi connected. Attached related dmesg output. Device `01:00.1` is suspended.
I can confirm from documentation about this laptop (Acer aspire A715-71G) that the embedded display is connected to the intel GPU (eDP) and the HDMI port is connected to the nvidia GPU, this must be the most probable case on these laptops. Otherwise, maybe `01:00.1` device wouldn't exist. When booting with intel gpu only, HDMI interface isn't listed on xrandr and HDMI screen has no input. This is supposed to happen as HDMI is connected to nvidia and nvidia should be powered off, right? This also happens with previous kernels and should not be related with this bug. ** Attachment added: "dmesg_#37~lp1907212+4_hdmiconnectedbeforeboot_intel.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907212/+attachment/5445188/+files/dmesg_%2337~lp1907212+4_hdmiconnectedbeforeboot_intel.txt -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1907212 Title: Power consumption regression after upgrade to 20.10 5.8.0-31-generic Status in linux package in Ubuntu: In Progress Bug description: After upgrading to Ubuntu 20.10 which ships kernel 5.8.0-31-generic, battery life is considerably less and power consumption is about 10 watts more idle, (idling at 14-15 watts) using integrated graphics. This is a hybrid GPU laptop Intel HD 630/GP107M, and based on past experiences a possible cause is not powering off the dedicated GPU completely while using the integrated. Running sudo powertop --auto-tune doesn't eliminate the issue. $ cat /sys/bus/pci/devices/0000:01:00.0/power/runtime_status suspended $ cat /sys/bus/pci/devices/0000:01:00.0/power/runtime_suspended_time 1815948 $ cat /sys/bus/pci/devices/0000:01:00.1/power/runtime_status active $ cat /sys/bus/pci/devices/0000:01:00.1/power/runtime_suspended_time 3827 Device "01:00.1 Audio device: NVIDIA Corporation GP107GL High Definition Audio Controller" appears active, does this mean that the audio subsystem of dGPU keeps it enabled, causing the 10-watt consumption? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1907212/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
