Re: rtl8723be on Fedora27

["Rákosi Gergely" <rakosi.gergely@gmail.com>]

2017-11-21 22:30 keltezéssel, James Cameron írta:
> On Tue, Nov 21, 2017 at 09:52:12PM +0100, Rákosi Gergely wrote:
>> 2017-11-21 21:37 keltezéssel, James Cameron írta:
>>> On Tue, Nov 21, 2017 at 03:08:16PM +0100, Rákosi Gergely wrote:
>>>> 2017-11-18 16:52 keltezéssel, Larry Finger írta:
>>>>> On 11/17/2017 06:22 PM, Rákosi Gergely wrote:
>>>>>> Hello Larry,
>>>>>>
>>>>>> First of all, thanks your help.
>>>>>> Lets see...here is the kernel version: 4.13.12-300
>>>>>> The machine is an Asus ROG 553VE
>>>>>>
>>>>>> The firmware which loading in the dmesg is : rtlwifi/rtl8723befw_36.bin
>>>>>> The output of md5sum is : 1850c1308fbcd95e9f6a7f58ede1e35f
>>>>> [...]
>>>>> sudo iw dev wlan0 scan | egrep "SSID|signal"
>>>>>
>>>>> Post that output. In addition, copy the dmesg output to some pastebin
>>>>> and post the link as well.
>>>>>
>>>>> Larry
>>>>>
>>>> Hello Larry,
>>>>
>>>> I hope this email post format is good, and fit to the rules.
>>>> Here is the output:
>>>>
>>>> root@skynet-x2 ~]# iw dev wlp2s0 scan | egrep "SSID|signal"
>>>>         signal: -46.00 dBm
>>>>         SSID: SKYNET-X2
>>>> [...]
>>>> [root@skynet-x2 ~]#
>>> Scan results seem normal.  Was this scan before disconnect?
>> Yes, this command output taken while the connection was OK
> Thanks.
>
>>>> And the dmesg output:
>>>>
>>>> https://pastebin.com/iqQSu2hD
>>> Is now v4.13.13.
>> Yes, thats the upgraded kernel
>>
>>> This is interesting, an H2C command was dropped, but no idea which.
>>>
>>> [    9.848052] rtl8723be: error H2C cmd because of Fw download fail!!!
>>>
>>> Disconnection happened at boot+440 seconds, associate+429 seconds;
>>>
>>> [  439.871033] rtlwifi: AP off, try to reconnect now
>>> [  439.871093] wlp2s0: Connection to AP 4c:5e:0c:c7:fa:e3 lost
>>>
>>> I cannot tell what causes disconnect.  I wonder if the same
>>> timing of the problem happens always, or if the timing varies.
>> The timing always changing, never is the same. And I dont realize
>> the cause at now...
> Thanks.  I had similar problem with different wireless device.
>
>>> Init MAC failed was another 30 seconds later;
>>>
>>> [  468.600670] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready
>>> [  469.618926] rtl8723be: Init MAC failed
>>>
>>> Looking at _rtl8723be_init_mac, there are two false returns;
>>> hardware power on fail, and llt write fail.
>>>
>>> Sorry, I don't have rtl8723be hardware.
>>>
>>> Rákosi, did any older kernel keep connection?
>> The oldest kernel is 4.13.9-300.fc27.x86_64 in Fedora 27
>> installation, but did the same.  If you can give advise how, and
>> what I do, then I'll try it.
> You might try running "Live CD" of Fedora 26 or Fedora 25, without
> installing, to test if unexpected disconnection happens in two older
> kernels.  Not for permanent solution, just for easy testing.
>
> I don't have specific advice for Fedora 27, you might ask Fedora
> community about that, or use RHBZ.  A quick search finds this old 2013
> page;
>
> https://fedoraproject.org/wiki/User:Ignatenkobrain/Kernel/Bisection
>
And now the wireless is working almost 20 hours long, from yesterday
afternoon. I dont know why. Lets check some happening:
- Yesterday I disconnect the charger from laptop, and lay down at the
other room
- I left the laptop more than a hour without interaction, so the system
is going to sleep
- When I push the keyboard the system load up, and everything is working
fine
- The battery almost depleted when I going back to the original room,
and connect the charger

Then nothing changed, and I have a working rtl8723be wifi module. Why ?

Thanks,
Gergely