FS#64869 - TP-Link UE300 slow after kernel upgrade

Attached to Project: Arch Linux
Opened by Louis Erasmus (louis_4_arch) - Tuesday, 17 December 2019, 04:34 GMT
Last edited by freswa (frederik) - Saturday, 22 February 2020, 16:41 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To freswa (frederik)
Architecture All
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

TP-Link UE300 USB 3.0 to GigaBit ethernet adpater using r8152 module no faster than 57 Mbit/s after upgrade to kernel 5.4. Full speed with kernel 5.3.x


Additional info:
5.4.1 - 5.4.3
Laptop limited to USB 2.0, but able to get full USB 2.0 speed with kernel 5.3.x


Steps to reproduce:
1) Power cycle router and switch
2) Boot with Arch Install kernel 5.4.1 - 5.4.3
3) run speedtest from terminal multiple times = 57 Mbit/s
4) Boot with Arch Dec 2019 ISO kernel 5.3.13
5) pacman -Syy
6) pacman -S speedtest-cli
7) run speedtest from terminal multiple times = 199 Mbit/s
8) Boot with Arch Install kernel 5.4.1 - 5.4.3
9) Network LAN transfer speed no faster than 3 MiB/s
This task depends upon

Closed by  freswa (frederik)
Saturday, 22 February 2020, 16:41 GMT
Reason for closing:  Upstream
Additional comments about closing:  https://bugzilla.kernel.org/show_bug.cgi ?id=205923
Comment by Louis Erasmus (louis_4_arch) - Thursday, 19 December 2019, 01:42 GMT
Tested kernel 5.4.4-arch1-1 and the same problem.
Tested kernel 5.4.5-arch1-1 and the same problem.
Comment by loqs (loqs) - Thursday, 19 December 2019, 18:52 GMT
Is the issue also present using linux 5.5-rc2?
Have you reported the issue upstream [1]?

[1] https://www.kernel.org/doc/html/latest/admin-guide/reporting-bugs.html
Comment by Louis Erasmus (louis_4_arch) - Thursday, 19 December 2019, 20:21 GMT
Thanks. Will do some more searching first to see if the issue has been reported elsewhere. Not tested 5.5, yet. Slow laptop for compile, so will see if I can test 5.5 through some other means.
Comment by loqs (loqs) - Thursday, 19 December 2019, 20:39 GMT
If you are prepared to use an unofficial repository https://wiki.archlinux.org/index.php/Unofficial_user_repositories#miffe
Comment by Jeff Rogers (sgtnoodle) - Tuesday, 31 December 2019, 03:33 GMT
Ever since I ran pacman -Syu yesterday, my desktop has been unable to reliably auto-negotiate Ethernet links (works maybe 1 in 20 tries). I tried both a linksys switch and a TPLink router, and I could not get the link to work. I tried my integrated NIC and a USB NIC and could not get the link to work. Forcing the link to 1Gbps in the network manager config makes it work fine.
Comment by Louis Erasmus (louis_4_arch) - Saturday, 22 February 2020, 09:52 GMT
  • Field changed: Percent Complete (100% → 0%)
I filed a bug report with bugzilla shortly after I had done it here. Still no fix and the problem has persisted into kernel 5.5.5. In fact I just tested 5.5.5 and the speed is ever slower at 7Mbit/s.
Comment by freswa (frederik) - Saturday, 22 February 2020, 09:53 GMT
Please post the upstream bug report link. Thanks
Comment by Louis Erasmus (louis_4_arch) - Saturday, 22 February 2020, 16:41 GMT
https://bugzilla.kernel.org/show_bug.cgi?id=205923

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