Bug 419686

Summary:	Upgrading 18.04 to 20.04 BETA Causing Random Slowdowns in WIFI/Networking Speeds
Product:	[Plasma] plasmashell	Reporter:	PGillespie <vermontpoet>
Component:	Networking in general	Assignee:	Jan Grulich <jgrulich>
Status:	RESOLVED DOWNSTREAM
Severity:	normal	CC:	bugseforuns
Priority:	NOR
Version First Reported In:	master
Target Milestone:	1.0
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description PGillespie 2020-04-05 14:50:08 UTC

SUMMARY

In brief, I upgraded Kubuntu 18.04 to 20.04 Beta. The bug that I'm experiencing may or may not be connected to plasma-nm, but someone more knowledgeable than me can re-categorize this if it turns out to be reproducible.

STEPS TO REPRODUCE
1. Connecting to as yet "random"(?) websites (duckduckgo, startpage, and OMGUbuntu for example) can result in extenuated wait times for page loading.
2. Attempting to updatwapt leads to failures to fetch.
3. Connecting to Speedtest.net resulted in 300 mbps upload and download whereas onnecting to https://www.speakeasy.net/speedtest/ resulted in a Connection Has Timed Out Error. 


SOFTWARE/OS VERSIONS

System:    Host: ThinkPad Kernel: 5.4.0-21-generic x86_64 bits: 64 Desktop: KDE Plasma 5.18.3 
           Distro: Ubuntu 20.04 LTS (Focal Fossa) 
Machine:   Type: Laptop System: LENOVO product: 20HF0012US v: ThinkPad T470s serial: <superuser/root required> 
           Mobo: LENOVO model: 20HF0012US v: SDK0J40697 WIN serial: <superuser/root required> UEFI: LENOVO v: N1WET31W (1.10 ) 
           date: 04/17/2017 
Battery:   ID-1: BAT0 charge: 21.6 Wh condition: 22.0/23.5 Wh (94%) 
           ID-2: BAT1 charge: 21.4 Wh condition: 21.7/26.3 Wh (82%) 
CPU:       Topology: Dual Core model: Intel Core i5-7300U bits: 64 type: MT MCP L2 cache: 3072 KiB 
           Speed: 800 MHz min/max: 400/3500 MHz Core speeds (MHz): 1: 792 2: 830 3: 809 4: 822 
Graphics:  Device-1: Intel HD Graphics 620 driver: i915 v: kernel 
           Display: x11 server: X.Org 1.20.7 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 20.0.2 
Audio:     Device-1: Intel Sunrise Point-LP HD Audio driver: snd_hda_intel 
           Sound Server: ALSA v: k5.4.0-21-generic 
Network:   Device-1: Intel Ethernet I219-LM driver: e1000e 
           IF: enp0s31f6 state: down mac: c8:5b:76:e3:99:5b 
           Device-2: Intel Wireless 8265 / 8275 driver: iwlwifi 
           IF: wlp58s0 state: up mac: f8:59:71:49:f6:2e 
Drives:    Local Storage: total: 476.94 GiB used: 272.06 GiB (57.0%) 
           ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 960 PRO 512GB size: 476.94 GiB 
Partition: ID-1: / size: 33.65 GiB used: 22.44 GiB (66.7%) fs: ext4 dev: /dev/nvme0n1p2 
           ID-2: swap-1 size: 15.62 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/nvme0n1p4 
Sensors:   System Temperatures: cpu: 36.5 C mobo: N/A 
           Fan Speeds (RPM): cpu: 0 
Info:      Processes: 236 Uptime: 1d 19h 44m Memory: 19.43 GiB used: 6.50 GiB (33.5%) Shell: bash inxi: 3.0.38

Comment 1 PGillespie 2020-04-05 14:51:34 UTC

typo: updatwapt ---> update apt

Comment 2 PGillespie 2020-04-05 15:03:44 UTC

This may have to with a Kernel Regression or be Kernel related? (This is getting quickly above my pay grade.) I used Grub Customizer to boot with 4.18

System:    Host: ThinkPad Kernel: 4.18.5-041805-generic x86_64 bits: 64 Desktop: KDE Plasma 5.18.3 
           Distro: Ubuntu 20.04 LTS (Focal Fossa)

And Network Connectivity is now functioning as it should. Call that a workaround?

Comment 3 PGillespie 2020-04-05 15:21:47 UTC

Good results with Kernel 5.2.0-050200-generic as well. My last comment, I guess.

Comment 4 Patrick Silva 2021-06-13 21:35:22 UTC

changing status as per comment 3

Comment 5 Ben Cooksley 2024-12-23 18:23:34 UTC

Bulk transfer as requested in T17796