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8265 very slow on copy files on LAN, especially on upload

2018-06-13, 7:52 AM

Hi,

 

recently purchased a lenovo T580, with 8265 wifi card

i received the laptop, and updated the preinstalled windows to 10 to build 1803, i already noticed that  i had slow copy speeds on my wifi network at home or at work, tried several routers/locations

 

on 2.4 i am connected at around 144Mbs , so i should have stable internal copy speeds at about 10MB/sec, while i only get 2-5 MB from laptop to synology

on 5ghz, connected at aroud 600Mbs , i get around 1 MB/sec only from laptop to synology

 

but this is only on the upload site, when i copy a file from the synology to my laptop, on 2.4 i get 10MB/sec, on 5ghz, i get 30MB/sec

 

tested on my girlfiends laptop, its a HP elite book, also with 8265 card, i get the speed that i want, like 40-50 MB/sec on 5 GHZ and 11 MB/sec on 2.4 on both directions, the laptop is just next to me

 

i have googled tried a lots of stuff

clean installed windows 10 today directly to 1803 build, when it was clean installed, with drivers from windows itself, same issue

then tried downloading latest proset intel driver , same  issue, uninstalled and installed the intel driver from lenovo site, same thing

in advanced settings, i have configured roaming aggresivenes to lowest, same issue

tried 20-40 band, other channels, i always have the same issue on my lenovo, while the HP is in every way working as expected

 

any help please? i am out of ideas

 

 

 
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Re: 8265 very slow on copy files on LAN, especially on upload

2018-06-13, 18:53 PM

this post is quite related, but it was on a T570 , but it didnt help in my case with that older driver

 

https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Thinkpad-T570-slow-WIFI/td-p/3842115/page/2

 

 

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Re: 8265 very slow on copy files on LAN, especially on upload

2018-06-19, 10:25 AM

update, today a lenovo techician came around, replaced wifi card, antennas, motherboard, still the same issue, even replaced other models wifi cards , like 8260 and 33xx

 

to exclude windows, he booted up ubuntu , still same issue

 

the wifi speed 5.0 or 2.4 ghz, is way to low, when connected to 300 mbit, when we copy files FROM laptop TO network , the  max speed is like 10 MB / sec

 

when we do the same test FROM network TO laptop, the speed is more like 20-25 MB, still not the expected speed, but better

 

did the test with other Lenovo models,  no issue, on that same network

 

so a bug in the T580 series? intel - lenovo ?

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9605 Posts

12-27-2009

CA

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Re: 8265 very slow on copy files on LAN, especially on upload

2018-06-19, 16:09 PM
Shot in the dark, but are you trying to copy one large file or many small files?

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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Re: 8265 very slow on copy files on LAN, especially on upload

2018-06-19, 16:13 PM

1 file of 2 gb , so I can test a continuous speed...

The same file I test with other laptops from collegues next to it without issues..

Lenovo l460 and Lenovo e580

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12-27-2009

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Re: 8265 very slow on copy files on LAN, especially on upload

2018-06-19, 16:21 PM
If you hook up your T580 to Ethernet, do you get a better (expected) speed?

If your WAN connection is fast enough, can you exceed your NAS transfer speed using something like speedtest.net?

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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Re: 8265 very slow on copy files on LAN, especially on upload

2018-06-19, 16:26 PM

yes, cable speed is as expected, 110mb / sec...

Its not only to nas , also to server shares, or even another wired laptop with a shared folder on same wifi access point...

 

Also tested on other sites, other access points, routers, it's a issue with the t580

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9605 Posts

12-27-2009

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Re: 8265 very slow on copy files on LAN, especially on upload

2018-06-19, 16:28 PM
Another wild guess, but does switching the Windows power profile to High Performance help any?

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
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Re: 8265 very slow on copy files on LAN, especially on upload

2018-06-19, 16:30 PM

Nope, doesn't help, it's also not related to windows, we booted up from Ubuntu live cd, same test, same result

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  • Message 10 of 10

Re: 8265 very slow on copy files on LAN, especially on upload

2018-08-13, 13:30 PM

finally fixed in Bios 1.14 for Lenovo Thinkpad T580 / P52 

 

CHANGES IN THIS RELEASE

  Version 1.14

 

[Problem fixes]

- Fix an issue where WLAN network might not be an expected speed.

- Fix an issue where the system may sleep suddenly and randomly.

- Fix an issue where the system may not unlock by TPM pin code.

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