Wake issues with Ubuntu 20.04 LTS

Asked by Ray Diviney on 2021-04-12

I have a Lenovo thinkpad T490s that i have tried several distros on. I keep having the same issue and i have spent hours investigating with no sucess. Everything works fine at startup. After the laptop sit for awhile it wont fully wake up. I have some fuctionality like using a terminal. Even that is not working properly because if i poweroff or reboot i get a black screen with a blinking curser and nothing else happens. One time i waited a very long time and got a messege that said "waiting for wpa_supplicant. All i have to do to get things working properly is hard reset with the power button. I really have no idea what is causing the issue or how to read error logs. I would really appreciate some help or advice on where to get it.

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Do you have the latest BIOS? This may help

Ray Diviney (techforay) said : #2

I investigated this. I see that Lenovo has a bios version 1.72 that i think should be for my laptop. I am at 1.71. When i run fwupdmgr i get the following report

ray@ray-ThinkPad-T490s:~$ fwupdmgr get-updates
• Thunderbolt Controller has the latest available firmware version
• Prometheus has the latest available firmware version
• Prometheus IOTA Config has the latest available firmware version
• System Firmware has the latest available firmware version
• UEFI Device Firmware has the latest available firmware version
• UEFI Device Firmware has the latest available firmware version
• UEFI Device Firmware has no available firmware updates
• UEFI Device Firmware has no available firmware updates
• UEFI Device Firmware has no available firmware updates
• USB Keyboard has no available firmware updates
• USB2.0 Hub has no available firmware updates
• USB3.0 Hub has no available firmware updates
• WDC WDS500G2B0C-00PXH0 has no available firmware updates
ray@ray-ThinkPad-T490s:~$

Launchpad Janitor (janitor) said : #3

This question was expired because it remained in the 'Open' state without activity for the last 15 days.