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Bug#840650: marked as done (RTLWIFI/RTL8723BE stopped working after Debian Sid Update)

Your message dated Sat, 15 May 2021 11:27:44 +0200
with message-id <YJ+UEBqmfSkITk/e@eldamar.lan>
and subject line Re: Bug#840650: Firmware Part 2
has caused the Debian Bug report #840650,
regarding RTLWIFI/RTL8723BE stopped working after Debian Sid Update
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
840650: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=840650
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---
Package: linux-image-4.7.0-1-amd64

Hi there,

I'm using Debian 8.5 sid & XFCE and so far everything was fine.

Two days ago after an apt-get update/upgrade i got a prompt to upgrade about 220 files , an operation that would free around 500MB of HDD, including linux-image/headers of 4.7.0.1 - Debian version 4.7.6.1 as an upgrade to previous installed (and nicely working) 4.7.5.1

PS: I read on Debian Wiki that rtlwifi/rtl8723be driver is a driver provided by Linux Kernel, and this is why i tagged this bug as a linux-image bug. Please let me know if i have to assign a different package.

After completing this 220 files upgrade and rebooted, my wifi card stopped working entirely (rtlwifi/rtl8723be).
 
While the wifi network indicator was looking alive, I had no internet access and also i had not even lan access. 
Moreover wifi icon starts showing disconected and reconnected a lot of times.

Once every 30 minutes i had some limited internet connection and then lost again.

Since Debian keeps the stable linux-image 3.16 , i was capable to boot with stable kernel and wifi worked correctly. 

Using modprobe -r rtl8723be and again modprobe rtl8723be has no improvement.

The strange thing is that i downgraded linux-image and linux-headers back to the old good working version 4.7.0.1 / 4.7.5.1 using the /testing repository, but still wifi refuses to work.

As a desperate step i further downgraded some more packages , but still wifi refuses to work.

This is the list of all downgraded packages:
gir1.2-networkmanager-1.0
network-manager
wpasupplicant
linux-compiler-gcc-5-x86
linux-headers-4.7.0-1-amd64:amd64 
linux-headers-4.7.0-1-common:amd64 (
linux-image-4.7.0-1-amd64:amd64 
linux-kbuild-4.7:amd64 
linux-libc-dev:amd64 

Could somebody help and advise what is going wrong....?

I attached the following files:
* apt history log file (includes list of 220 apt-get upgraded packages) 
* apt list --installed log file (all the files installed in my system)
* File rtl3-16.log with modinfo rtl8723be and rtlwifi under 3.16 kernel
* File rtl3-16.log with modinfo rtl8723be and rtlwifi under 3.16 kernel
* lsmod, lspci, lsusb files either for 3.16 kernel boot and for 4.7 kernel boot.

Regards

George Vasiliou

Attachment: apthist-nice.log
Description: Binary data

Attachment: apt-installed.log
Description: Binary data

Attachment: lspci4-7.log
Description: Binary data

Attachment: lsusb3-16.log
Description: Binary data

Attachment: lsusb4-7.log
Description: Binary data

Attachment: rtl3-16.log
Description: Binary data

Attachment: rtl4-7.log
Description: Binary data

Attachment: lsmod3-16.log
Description: Binary data

Attachment: lsmod4-7.log
Description: Binary data

Attachment: lspci3-16.log
Description: Binary data


--- End Message ---
--- Begin Message --- 
Hi,

On Fri, Oct 14, 2016 at 11:43:57PM +0530, Ritesh Raj Sarraf wrote:
> On Fri, 2016-10-14 at 10:15 +0300, George Vasiliou (GMAIL) wrote:
> > Booting with the previous linux image 4.7.5.1 and after setting firmware
> > swtich fwlps to off , seems that established a rigid connection.
> > 
> > Maybe the new kernel 4.7.6.1 is more "sensitive" on the FW flags, since i had
> > never issues before with fwlps which had been left to it's default value (1)
> > for a lot of months.
> > 
> > Maybe i could try to upgrade again in the new linux-image 4.7.6.1 and see how
> > it performs with fwlps off.
> > 
> > I switched off fwlps by using
> > echo "options rtl8723be fwlps=0">/etc/modprobe.d/rtl8723be.conf
> > (or could be done by adding above line in the end of the existed
> > modsetting.conf file in the same directory).
> > PS: All the rest options of rtl8723be are left to default.
> 
> I'm glad you figured it out. Yes. This device is screwed up and solely depends
> on firmware and operating modes.

I'm now closing this bugreport, please reopen if you feel otherwise
that there are still issues to be handled (and reproducible with
current versions).

Regards,
Salvatore

--- End Message ---
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