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2 Posts

04-27-2021

Costa Rica

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Re:9i weak wi-fi signal

2021-04-27, 18:32 PM

Just followed the guide that was posted above (https://thomascoward.co.uk/reviews/lenovo-9i-faultly-wifi-low-signal-strength/) (removed the three screws under the plate) and now WIFI signal is better, but WIFI speed is still not the best....

 

This sucks....will not recommend LENOVO AGAIN to anyone

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12 Posts

12-23-2020

Germany

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Re:9i weak wi-fi signal

2021-05-10, 11:03 AM

Do you guys think that there is any way to get our money back?

Since it's an absolute design failure & hardware issue, I personally think it's not tolerable for that high price. 

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7 Posts

05-12-2019

United States of America

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Re:9i weak wi-fi signal

2021-05-10, 20:44 PM

We were going to write our testing experience using the following wireless adapters:

 

1. The internal Intel Wi-Fi 6 AX201adapter.

2. Cudy WU1300S USB 3.0 Wireless adapter with 802.1AC 1300Mbps.

3. TP-Link Nano USB Wifi Dongle 150Mbps with high gain wireless antenna. 

 

But the 4368 post from JDGillis Bluetooth covers it very well. https://forums.lenovo.com/t5/Lenovo-Yoga-Series-Notebooks/i9-weak-wi-fi-signal/m-p/5056282

 

The speed for both DOWNLOAD and UPLOAD with the internal Wifi-6 adapter so far seems to be very good as compared to the other two Wifi adapters that we used. We thought that using an external USB device, especially with a high gain antenna will yield a stronger signal and more importantly better speed, but that is not the case. Before seeing JDGillis Bluetooth's post, we looked at the various "Wireless Mode" in the Advance tab of the network adapter settings, test and try to derive which devices to use at what wireless mode for what scenarios. Our result indicates for, inside our house, we do not need these external USB wireless adapters. Maybe when this laptop is being used at a hotspot like at a hotel with low signal coverage, then we might change to 2.4 Ghz or the USB Wifi external antenna. We have not run into this yet at two hotels were at recently.

 

Admittedly, the visual of the signal looks a little low on the internal adapter, but the speed of the connection consistently has the best speed in most cases or sometimes even with the external adapters. We do not have the latest access point (AP), but our AP does support both 2.4 Ghz and 5 Ghz.

 

Love to see someone else test this out to see the results, document what "Wireless Mode" should be changed to, and maybe even some use cases in there, but we are pretty happy with the laptop so far. If not, try to change the "Wireless Mode" to 802.1ac and see if you are happy with this setting.


Cheers,

 

 

 

 

 

 

Here is what we tested:

 

Using the internal 

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1 Posts

05-12-2021

United States of America

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  • Message 64 of 69

Re:9i weak wi-fi signal

2021-05-12, 2:06 AM

I returned the 9i I purchased today. It's very bad that so many people are documenting that the fix to this is to permanently alter the design of the system by removing screws or changing the antenna configurations. This should not be the case on a computer of this caliber. Very disappointing that Lenovo could not get this one right. For everyone else reading about Lenovo Wi-Fi slowness issues - there is no fix. You can have Lenovo attempt hardware replacements, or even go back to the store and see that the issue with the Wi-Fi signal and slowness is repeatable on computers at the store. 

 

Run the command "netsh.exe" from the start menu, and then type the command: wlan show interfaces

 

That will show you your details on the WiFi card. I was never able to get the Yoga I had above ~58% on it's signal meter - while three other computers within arms reach were all over 80%. Additionally the Receive rate was never above 100 Mbps, while other computers near me are all just over 700 Mbps. 

 

I tried all the different driver updates and rollbacks available, and none worked. I even had a remote session with Lenovo support and let their technicians take control of the computer to attempt to fix the issue. It was not resolvable. Because of this, I have had no choice but to return the computer. I ended up with my second choice - a Dell XPS, but at least the Wi-Fi in it is up to par.

 

 

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7 Posts

05-12-2019

United States of America

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Re:9i weak wi-fi signal

2021-05-12, 4:56 AM

Thanks for sharing and totally understand the frustration. We always get better throughput with our other Lenovo laptop.

 

We are keeping the Lenovo Yoga 9i since we already put in the effort to customize it and purchased the multi-years extended warranty. 

 

Sharing our short tests based on the commands that you shared. Very inconsistent results.

 

Our AP is a 802.11ac capable AP that was released in 2013. Not all antennas are enabled due to inadequate POE power.

 

Both laptops (Lenovo Thinkpad P50 and Lenovo Yoga 9i) are about 17-20 feet from the AP.

 

We did change a couple of options and to get 802.11ac. We used:

 

Transmit Power = 5. Highest
Throughput Booster = Enabled
Roaming Aggressiveness = 5. Highest
Preferred Band = 3. Prefer 5Ghz band

 

We did change a couple of options and to get 802.11n. We used:

 

Transmit Power = 5. Highest
Throughput Booster = Enabled
Roaming Aggressiveness = 5. Highest
Preferred Band = 2. Prefer 2.4Ghz band

 

1. This is the Lenovo P50 laptop with default settings:

Signal and throughput is consistent.

 

netsh>wlan show interfaces

There is 1 interface on the system:

    Name                   : Wi-Fi
    Description            : Intel(R) Dual Band Wireless-AC 8260
    GUID                   : XXXXXX
    Physical address       : XXXXXX
    State                  : connected
    SSID                   : XXXXXX
    BSSID                  : XXXXXX
    Network type           : Infrastructure
    Radio type             : 802.11ac
    Authentication         : WPA2-Personal
    Cipher                 : CCMP
    Connection mode        : Profile
    Channel                : 165
    Receive rate (Mbps)    : 173.3
    Transmit rate (Mbps)   : 173.3
    Signal                 : 87%
    Profile                : XXXXXX

    Hosted network status  : Not available

 

2. This is the Lenovo 9i laptop:

 

a. Best option in our tests is 802.11n
Signal is consisten5 (85%-99%), but throughput is inconsistent.

 

netsh>wlan show interfaces

There is 1 interface on the system:

    Name                   : Built-in Intel Wifi
    Description            : Intel(R) Wi-Fi 6 AX201 160MHz
    GUID                   : XXXXXX
    Physical address       : XXXXXX
    State                  : connected
    SSID                   : XXXXXX
    BSSID                  : XXXXXX
    Network type           : Infrastructure
    Radio type             : 802.11n
    Authentication         : WPA2-Personal
    Cipher                 : CCMP
    Connection mode        : Auto Connect
    Channel                : 10
    Receive rate (Mbps)    : 104
    Transmit rate (Mbps)   : 144.4
    Signal                 : 91%
    Profile                : XXXXXX

    Hosted network status  : Not available


b. OK signal with unacceptable speed with 802.11g
Signal (75%-85%) and throughput is consistent.

 

netsh>wlan show interfaces

There is 1 interface on the system:

    Name                   : Built-in Intel Wifi
    Description            : Intel(R) Wi-Fi 6 AX201 160MHz
    GUID                   : XXXXXX
    Physical address       : XXXXXX
    State                  : connected
    SSID                   : Private-Resident
    BSSID                  : XXXXXX
    Network type           : Infrastructure
    Radio type             : 802.11g
    Authentication         : WPA2-Personal
    Cipher                 : CCMP
    Connection mode        : Auto Connect
    Channel                : 10
    Receive rate (Mbps)    : 58.5
    Transmit rate (Mbps)   : 57.8
    Signal                 : 84%
    Profile                : XXXXXX

    Hosted network status  : Not available

 

c. Terrible signal (46%-60%) with ok, but inconsistent speed (Received 24 Mbps -104 Mbps, Transmit 65 Mbps - 130 Mbps) with 802.11ac

 

netsh>wlan show interfaces

There is 1 interface on the system:

    Name                   : Built-in Intel Wifi
    Description            : Intel(R) Wi-Fi 6 AX201 160MHz
    GUID                   : XXXXXX
    Physical address       : XXXXXX
    State                  : connected
    SSID                   : XXXXXX
    BSSID                  : XXXXXX
    Network type           : Infrastructure
    Radio type             : 802.11ac
    Authentication         : WPA2-Personal
    Cipher                 : CCMP
    Connection mode        : Auto Connect
    Channel                : 165
    Receive rate (Mbps)    : 58.5
    Transmit rate (Mbps)   : 57.8
    Signal                 : 50%
    Profile                : XXXXXX

    Hosted network status  : Not available

 

 

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6 Posts

02-20-2021

United States of America

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  • Message 66 of 69

Re:9i weak wi-fi signal

2021-05-13, 14:30 PM
I wonder if you put the old SSD back (just to test this), if the WiFi would stay improved (that is, caused by opening and re-sealing some of the screws, or that little washer thing, or the locktite), or if the SSD/shielding actually was a contributing factor?
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6 Posts

02-20-2021

United States of America

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  • Message 67 of 69

Re:9i weak wi-fi signal

2021-05-13, 14:39 PM

@LenovoLaptopOwn, I wonder if you put the old SSD back (just to test this), would:

(A) the WiFi stay improved -- suggesting improvement caused merely by opening and re-sealing some of the screws, or that little washer thing, or the locktite; OR

(B) was the SSD/shielding actually a causal factor (in whole or in part)?

 

but yeah, shame on Lenovo.  Give us ceramic/plastic screws, washers, or whatever actually solves this problem.  Class action, anybody? (about 80% kidding)

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118 Posts

06-12-2009

Norway

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Re:9i weak wi-fi signal

2021-06-08, 10:04 AM
The screws are meant to hold the lid.. If you open the lid without removing these screws, they break leaving the round plastic around them (that you have broken off). So the proper procedure to remove the bottom cover is actually to remove the rubber strip first (and never getting it back together as it should be..). Bad design!
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15 Posts

03-13-2021

Switzerland

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  • Message 69 of 69

Re:9i weak wi-fi signal

2021-06-08, 10:11 AM
exactly my though after I read the service manual
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