Kernel 4.17 wifi usb restarts

asked 2018-07-05 01:41:51 -0500

EtherealSoul
61 ●2 ●7

updated 2018-08-13 01:12:14 -0500

I'm using an USB Wifi dongle (rtl8188eu) and it has been working fine with kernel 4.16.x. Once I upgraded to 4.17.x it "silently" crashes. I do not see any error on journalct. As far as I can tell, as long as I do not configure to connect to the wifi it is fine. Once I configure it to join a wifi network. It conects, hangs and after ~90'secs it enters into reboot. Boot -> connect Wifi -> hang -> reboot.

P.S. it does not matter in which USB port the dogle is connected to.

Update as of kernel 4.17.12 the bundled wifi driver (r8188eu) main issue now is during reboot in case I boot first to windows that the dongle does not start, it forces me to make a replug of the wifi dongle.

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I'm experiencing the same problem, every thing works okay with kernel-lts or without using usb wifi with module rtl8188eu.

EDIT: also I compiled the module from git hub, that half resolve part of problem, the system doesn't instantly freeze anymore, but randomly will freezes anytime, without a log error in anywhere. Without using the usb wifi the randomly freezes doesn't occour.

lsdw ( 2018-07-05 12:21:26 -0500 )edit

Related fedora bug report: 1596311

genodeftest ( 2018-07-08 17:30:32 -0500 )edit

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1

answered 2018-07-13 04:28:48 -0500

EtherealSoul
61 ●2 ●7

updated 2018-07-14 04:08:12 -0500

"I got it working" typing this on kernel-4.17.4.

But it is not straight forward nor using the official module. For the time being I used this module: https://github.com/quickreflex/rtl818... Overall the steps I did were:

Boot kernel-4.16.3 or previous working kernel

Clone git repository git clone https://github.com/quickreflex/rtl818...

dnf update ( to install kernel-4.17.4)

dnf install make gcc kernel-headers-4.17.4 kernel-devel-4.17.4 elfutils-libelf-devel

remove USB dongle

reboot into new kernel

cd /path/to/git_clone/rtl8188eus

make all

reboot

cd /path/to/git_clone/rtl8188eus && make install

modprobe 8188eu

plug in wifi dongle

enjoy network.

I big thanks to quickreflex for the module.

As mentioned in the comments by genodeftest, with each new kernel there is the possibility that we will need to generate a new module.

UPDATE: the make install does not seem to work when you want to install the new module for the new kernel. Fr me the quickiest way was to reboot and do a modprobe. Just did it with kernel-4.17.5

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There is one catch: You may need to rebuild (make all and make install) the module for every kernel version.

Also, you should not need to reboot your computer. Using rmmod and lsmod should be sufficient.

genodeftest ( 2018-07-14 02:39:10 -0500 )edit

You are right, I'll update the answer to include these points.

EtherealSoul ( 2018-07-14 03:33:51 -0500 )edit

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-2

answered 2018-07-08 10:04:22 -0500

MarkBridgett
1

I have a similar issue - I too use UBS Wifi and get the "silent" dying of my server - although mine does seem to run for a few days (mostly) before it "dies". I have been unable to work out what's going on either. Mine too started with the 4.17 kernel (specifically 4.17.2 but it also occurs with 4.17.3).

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do not post problems in the answers, it causes confusion for people looking for solutions.

SteveEbey73701 ( 2018-07-13 07:30:46 -0500 )edit

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answered 2018-07-08 07:39:41 -0500

dani77
11 ●1 ●1

Same problem; Surface Pro 3 with 4.16 kernel working fine, with the 4.17 the wifi crashes.

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This seems to be different from @EtherealSoul's problem. His computer reboots, in your case only the wifi stops.

In your case I recommend searching for a kernel panic or debugging the driver. In some cases unloading and reloading any related kernel modules helps work around the problem.

genodeftest ( 2018-07-08 17:26:22 -0500 )edit

do not post problems in the answers, it causes confusion for people looking for solutions.

SteveEbey73701 ( 2018-07-13 07:30:12 -0500 )edit

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-2

answered 2018-07-12 07:55:28 -0500

MarkBridgett
1

I am not a developer and to be honest I wouldn't know where to start with debugging a driver. I'll have a look and see what I can find. I have just had another crash after about two days of running.

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do not post problems in the answers, it causes confusion for people looking for solutions.

SteveEbey73701 ( 2018-07-13 07:31:06 -0500 )edit

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Kernel 4.17 wifi usb restarts

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