Aspire 5 515-54G-73N7 Ubuntu 20.04 boot problem

lara_nicks

My Aspire 5 515-54G-73N7 is running Ubuntu 20.04. Until some days ago, I had no problems during booting. Now, almost every time, but not always, it hangs during boot. Then it either shows a blank black screen with a blinking cursor or only the following lines:
Bluetooth: hci0: command 0xfc09 tx timeout
Bluetooth: hci0: Failed to send firmware data (-110)
Bluetooth: hci0: sending frame failed (-19)

The kernel version is 5.8.0-36 (I tried to boot an older kernel but the problem also occurs there). However, I can boot into recovery mode.

I ran a MemTest, it showed no errors.

The following "red lines" are logged in kernel.log:
[    0.334085] pci 0000:02:00.0: BAR 6: failed to assign [mem size 0x00080000 pref]
[    0.424297] Initramfs unpacking failed: Decoding failed
[    0.482633] pcieport 0000:00:1c.4: DPC: error containment capabilities: Int Msg #0, RPExt+ PoisonedTLP+ SwTrigger+ RP PIO Log 4, DL_ActiveErr+
[    0.483215] pcieport 0000:00:1d.4: DPC: error containment capabilities: Int Msg #0, RPExt+ PoisonedTLP+ SwTrigger+ RP PIO Log 4, DL_ActiveErr+
[    0.540227] RAS: Correctable Errors collector initialized.
[    2.463845] EXT4-fs (nvme0n1p2): re-mounted. Opts: errors=remount-ro
[    2.724810] iwlwifi 0000:00:14.3: Direct firmware load for iwlwifi-QuZ-a0-hr-b0-56.ucode failed with error -2
[    2.727538] iwlwifi 0000:00:14.3: Direct firmware load for iwl-debug-yoyo.bin failed with error -2
[    3.041233] thermal thermal_zone1: failed to read out thermal zone (-61)

Is there any hint to what's causing the problem?

And I assume there is a (new?) heat/fan problem. The fan is running (almost) constantly now (not only when Ubuntu is up but also in EFI), although there is almost no load.

JackE

>>>(not only when Ubuntu is up but also in EFI)>>>

What do you mean by this? EFI partition contains the UEFI bootstrapper trusted files for Ubuntu and other OSs if multiboot? Low load CPU and GPU temps should range between about 65-75*C with dual fans running between 3500-4500rpm. Should be kind of noisy with noticeable beat frequencies since the CPU fan generally runs at lower speeds than the GPU fan at the similar temps. If you're also running Windows, there is some control available over fan speeds in the advanced settings of Control Panel's power  plan that you're running. Depending on your Ubuntu GUI distro, there may be similar  fan speed controls as in Mint Cinnamon.

>>> not always, it hangs during boot.>>>

Some Ubuntu distros have more polished device detection and driver installations than others often with newer wifi-BT combo cards. I suggest that you post the BT issue on the  user forums for  your distro specifying the wifi card used in your system most likely the Intel AC 9560 dual band BT card.

Jack E/NJ