« About to update to RedHat Enterprise Linux or CentOS 7.7? Beware! | Main

Monday, September 16, 2019

Lenovo IdeaPad S340-15API


I've just purchased a Lenovo IdeaPad S340-15API From Argos to replace our aging and very slow Acer Aspire E5-511 laptop.

The spec is good. For £550 you get a 15.6 inch Full HD (1920 x 1080) display, AMD Ryzen 7 3700U quad-core 2.3GHz processor (with Simultaneous Multi-Threading giving 8 virtual cores) with Radeon Vega Mobile graphics, 8GB of RAM, of which 2GB is taken as display RAM, and 512GB SSD (WDC PC SN520 SDAPMUW-512G-1101).

Windows 10 1809 Home pre-installed (in S mode), but it is a simple fix to switch to full Windows 10 Home.

It didn't offer me Windows 10 1903, so I went and fetched it using the Microsoft Update Assistant.

It took a while to get that on, and the successive updates.

Lenovo Vantage offered offered a few driver updates, but I went to the Lenovo Support website and manually downloaded the latest BIOS and assorted drivers.

Power settings are never right by default, as I discovered the hard way. I could boot once, close the lid to put it into sleep mode, open it again to wake up, but the second time I closed the lid it would not behave and effectively locked up.

Powering off and on brought it back to life.

Eventually, after running powercfg /a I discovered a workaround:

C:\Windows\System32>powercfg /a
The following sleep states are available on this system:
Standby (S3)
Hibernate
Hybrid Sleep
Fast Startup
The following sleep states are not available on this system:
Standby (S1)
The system firmware does not support this standby state.
Standby (S2)
The system firmware does not support this standby state.
Standby (S0 Low Power Idle)
The system firmware does not support this standby state.

In the Power Options page in Control Panel, Change Plan Settings, then Change advanced power settings

In the Sleep section of the Advanced settings, turn Allow hybrid sleep on for both On battery and Plugged in

Then it all works as expected.

Postscript, September 28, 2019

The cause of the Sleep problem was the Realtek Audio Driver, and the fix was found on the Lenovo Support Forum here.

If you're not averse to extracting .cab files and manually updating drivers, give it a go.


Posted by Phil at 5:25 PM
Edited on: Saturday, September 28, 2019 8:32 PM
Categories: IT