06-10-2019 01:23 AM
sorry for the silly topic name, but it describes my problem perfectly. My problem is that (allegedly) my RX550 is draining over 4Watts even when it is not utilized at all. I tried drivers from Lenevo then directly from AMD and it seems that the problem still remains. I usually don't need dedicated GPU, so I tried to disable it, but the option in BIOS to disable dedicated graphics is not there. I looked up images of where it is supposed to be, but in my case it's just missing. Even before trying disabling it in BIOS, I went to Power Options and maximized battery life everywhere it seemed to have something with GPU. Nothing helped.
Rather than solving the problem through Power Options, I would like to know why my E590 has no option in BIOS to disable dedicated GPU?
You can see in the screen below, where I get my information about power drain. Output is from HWMonitor and the value changes, so it is definitely getting that value from somewhere.
06-11-2019 09:56 AM
Hi H00ki! Welcome to our forums community. Unfortunately, this model is a hybrid model that doesn't have that feature unlike with the other model variants. What we suggest is for you to disable it from the device manager.
06-12-2019 04:34 AM
Thank you for your reply. By "other model variants", you mean other model series like "T" for example? And is it a hardware or just software (BIOS) feature? Thanks.
06-12-2019 08:09 AM
It's the same model but different variant like the Thinkpad E540 that has the feature to disable it in BIOS. Please refer to the photo below. What I meant was it is a hardware limitation of the model Thinkpad E590.
06-19-2019 04:14 AM
Sadly, disabling dedicated graphics in device manager removed info from HWMonitor, which is expected, but the fan in the laptop kept spinning and idle teperatures were higher than normal (even though fan was spinning most of the time.) I guess that the disabled device (RX550) was somehow in a state when it was draining even more power than in the "not being used" state. This didn't help the fact that CPU and GPU are on the same heatpipe. Could this be a bug to report?
06-19-2019 03:43 PM
Hi h00ki! For models with discrete thermal pipes, they have the same heatpipe. Please see page 67 of the hardware maintenance manual: https://lnv.gy/2x7LcGs
The laptop's graphics card is hybrid, it means that it will switch automatically from integrated to dedicated to integrated depends on the demand of the program or apps you are using.