Bug 92151

Summary:	WiFi hiccup / lag with Kernel 3.18 and RTL8188CE
Product:	Drivers	Reporter:	Jack (thewheelychecker)
Component:	network-wireless	Assignee:	drivers_network-wireless (drivers_network-wireless)
Status:	NEW ---
Severity:	normal	CC:	Larry.Finger, linville, mtall.qld
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	3.18	Subsystem:
Regression:	No	Bisected commit-id:

Description Jack 2015-01-27 14:45:19 UTC

Distribution: Arch Linux
Hardware: Realtek RTL8188CE (WiFi-Controller)

I have a really weird hiccup issue with Kernel 3.18. For example when I ping a hardwired device in my network, every few seconds it takes a tremendous amount of time to receive/send. See the output of ping: http://pastebin.com/FKKfvE7G (BTW, the same occurs when pinging google.com)
Running processes: http://pastebin.com/SWtVTTrP

This issue does also exist in other usecases, such as web surfing, gaming etc.
The issue does not exist in Windows 8 (on the same hardware).

After downgrading Arch Linux to Kernel 3.17.6, the problem was resolved.

PS: I hope I posted this in the correct section.

Comment 1 Jack 2015-01-27 14:55:12 UTC

Also please see this reddit thread: http://redd.it/2t37ko

Comment 2 Stan 2015-01-27 15:06:38 UTC

Possibly related bug:
https://bugzilla.kernel.org/show_bug.cgi?id=92161

Comment 3 Larry Finger 2015-01-27 16:58:42 UTC

There are a number of bugs in 3.18.0 that are resolved in later upddates. The last of these will be in 3.18.4 that should be out soon.

Does 3.18.4 help?

Comment 4 Larry Finger 2015-01-27 17:01:21 UTC

This bug is not related to 92161 - that is a different issue.

Could someone change the status to "needinfo" from the OP? My account does not have sufficient privilege.

Comment 5 Jack 2015-01-27 18:31:46 UTC

(In reply to Larry Finger from comment #4)
> Could someone change the status to "needinfo" from the OP? My account does
> not have sufficient privilege.
What info do you need?
(First bug report here, I'm a bit of a noob :-) )

Comment 6 Jack 2015-01-27 18:43:32 UTC

This is (most likely) the same issue: https://bugzilla.kernel.org/show_bug.cgi?id=90571

Comment 7 Larry Finger 2015-01-27 23:54:59 UTC

There is a question in comment 3. The needinfo is with regard to that query.

I agree that 90571 is probably the same bug.

Comment 8 Jack 2015-01-28 21:26:22 UTC

(In reply to Larry Finger from comment #3)

> Does 3.18.4 help?

In 3.18.4-1-ARCH the issue seems to be fixed.
(There are still occasional hiccups, although I think those are because other devices are also using WiFi)