Bug 1391987

Is there anything in the logs when it disconnects? There were very few changes to that specific driver in between these two revisions, so I am wondering if it is elsewhere and this is a symptom?

I have updated the kernel to 4.8.6-300.fc25.x86_64 and the problem is still relevant

Nov 05 11:58:26 v0hws NetworkManager[899]: <debug> [1478329106.5096] device[0x55f9a846f410] (wlp2s0): add_pending_action (1): 'scan'
Nov 05 11:58:26 v0hws NetworkManager[899]: <debug> [1478329106.5105] device[0x55f9a846f410] (wlp2s0): remove_pending_action (0): 'scan'
Nov 05 11:58:30 v0hws NetworkManager[899]: <trace> [1478329110.9710] platform-linux: event-notification: NEWLINK, seq 0: 2: wlp2s0 <UP,LOWER_UP;broadcast,multicast,up,running,lowerup> mtu 0 arp 1 wifi? not-init addrgenmode none addr F4:6D:04:A1:6C:D8 rx:3,357 tx:2,288
Nov 05 11:58:30 v0hws NetworkManager[899]: <trace> [1478329110.9724] exported-object[0x7f7ef0004e10]: unexport: "/org/freedesktop/NetworkManager/AccessPoint/9"
Nov 05 11:58:30 v0hws NetworkManager[899]: <trace> [1478329110.9731] exported-object[0x55f9a843cdf0]: unexport: "/org/freedesktop/NetworkManager/AccessPoint/13"
Nov 05 11:58:30 v0hws NetworkManager[899]: <trace> [1478329110.9913] exported-object[0x55f9a84ef040]: export: "/org/freedesktop/NetworkManager/AccessPoint/16"

*********** MASS BUG UPDATE **************
We apologize for the inconvenience.  There is a large number of bugs to go through and several of them have gone stale.  Due to this, we are doing a mass bug update across all of the Fedora 25 kernel bugs.
 
Fedora 25 has now been rebased to 4.9.3-200.fc25.  Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel.
 
If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26.
 
If you experience different issues, please open a new bug report for those.

Unfortunately I can not reproduce this problem, due to the fact that the changed network adapter on the Qualcomm Atheros AR9227. And the problem persists itself.

I have the same problem on my desktop with RTL8192CE PCIe Wireless Network Adapter and latest kernel (4.9.4-201.fc25.x86_64). In order to connect to the Internet, I setup a wired connection.

Also happening on Lenovo E525 laptop. I'm currently booting with the previous kernel on the grub menu.

The problem still remains with the latest kernel (4.9.5-200.fc25.x86_64)

The problem is resolved with the latest 4.8 kernel (4.8.6-300.fc25.x86_64)

I can report:

Error occurs on kernel-4.9.4-201.fc25.x86_64

Error occurs on kernel-4.9.5-200.fc25.x86_64

Error does not occur on kernel-4.8.6-300.fc25.x86_64

Now I am worried, if it doesn't work with the next kernel upgrade I may lose my working kernel from the grub menu!

(In reply to czbrooking from comment #9)
> I can report:
> 
> Error occurs on kernel-4.9.4-201.fc25.x86_64
> 
> Error occurs on kernel-4.9.5-200.fc25.x86_64
> 
> Error does not occur on kernel-4.8.6-300.fc25.x86_64
> 
> Now I am worried, if it doesn't work with the next kernel upgrade I may lose
> my working kernel from the grub menu!

Don't worry.
You can install whenever you want the 4.8 "working" kernel:
sudo dnf install kernel-4.8.6-300.fc25
Just bear in mind that you might need to increase the "installonly_limit" value in the appropriate file: /etc/dnf/dnf.conf

(In reply to pjhavariotis from comment #10)
> (In reply to czbrooking from comment #9)
> > I can report:
> > 
> > Error occurs on kernel-4.9.4-201.fc25.x86_64
> > 
> > Error occurs on kernel-4.9.5-200.fc25.x86_64
> > 
> > Error does not occur on kernel-4.8.6-300.fc25.x86_64
> > 
> > Now I am worried, if it doesn't work with the next kernel upgrade I may lose
> > my working kernel from the grub menu!
> 
> Don't worry.
> You can install whenever you want the 4.8 "working" kernel:
> sudo dnf install kernel-4.8.6-300.fc25
> Just bear in mind that you might need to increase the "installonly_limit"
> value in the appropriate file: /etc/dnf/dnf.conf


Thanks that's useful!

I don't know if it is a symptom or cause but when shutting down with a non-working kernel it hangs in the shutting down dynamic firewall until it times out

(In reply to pjhavariotis from comment #10)
> (In reply to czbrooking from comment #9)
> > I can report:
> > 
> > Error occurs on kernel-4.9.4-201.fc25.x86_64
> > 
> > Error occurs on kernel-4.9.5-200.fc25.x86_64
> > 
> > Error does not occur on kernel-4.8.6-300.fc25.x86_64
> > 
> > Now I am worried, if it doesn't work with the next kernel upgrade I may lose
> > my working kernel from the grub menu!
> 
> Don't worry.
> You can install whenever you want the 4.8 "working" kernel:
> sudo dnf install kernel-4.8.6-300.fc25
> Just bear in mind that you might need to increase the "installonly_limit"
> value in the appropriate file: /etc/dnf/dnf.conf

Thank you! Now my wifi card works!

I have the same problem on ThinkPad X230 and latest kernel(4.9.5-200.fc25).

I'm currently booting with the old kernel(4.8.16-300.fc25.x86_64) no problem.

I also have this problem on a ThinkPad X230 on kernel versions 4.9.5-100.fc24 and 4.9.4-100.fc24, with a Realtek RTL8188CE network controller. I connect to the network for about 1 second and then immediately lose the wireless connection and cannot get it back. 

When I boot with the third most recent kernel (4.8.15-200.fc24) the wireless connection works fine.

The same issue occurs on my ThinkPad T420 with a Realtek 8188CE wireless card.
Mostly Wifi crashes already while obtaining an IP Address via DHCP. In rare cases, usually after graphical login the internet connection remains for about 20 seconds.

On a 4.8 kernel everything works fine.

Here is my wifi hardware from lspci:

------------------
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
04:00.0 System peripheral: Ricoh Co Ltd PCIe SDXC/MMC Host Controller (rev 07)
05:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
-------------------

still not working with kernel-4.9.6-200.fc25.x86_64

Same problem here on a Toshiba laptop (Realtek 8188CE): after dnf update and reboot (Jan 29, with kernel 4.9.6), connect is OK but no packet transmitted.
Original live F25 Mate DVD is OK.
I have tried to reinstall packages from the original F25 distro for kernel-*, wpa_supplicant and NetworkManager-*. This only resolves the problem partially: it works or not randomly.
Maybe this is also a linux-firmware problem (didn't try to use the original) ?

This seems to have been fixed by "[PATCH] rtlwifi: rtl8192ce: Fix loading of incorrect firmware" posted to lkml.

The patch has already been merged in linux-next.

Can people confirm that https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=52f5631a4c05 ([PATCH] rtlwifi: rtl8192ce: Fix loading of incorrect firmware) fixes the issue either by running rawhide or building it yourself? If so I can pull it in.

The patch has not yet been included in rawhide. Im currently building myself and will come up with results tomorrow.

Applying the patch on top of v4.10-rc7 fixes the bug for me.

Since there have been no changes to that specific driver since v4.9, the patch should work with v4.9.x Kernels, too.

I think, we actually messed up two bugs here:

1. The Wireless instability initially mentioned by v0mqfish. Here the wireless connection breaks after a few minutes, but can be recovered by reconnecting the network. I experienced this bug myself since about May 2016 (back then on Fedora 23) and even with the patch mentioned before applied the Wifi connection breaks from time to time. 


2. The driver crash caused by loading the incorrect firmware. Somewhere between kernel 4.8 and 4.9 an if clause to decide which firmware to load had been removed, which sometimes causes the wrong firmware to be loaded and the Wireless driver to stop working. The result is that Wifi crashes after some seconds and is not recoverable, as described by kat. The mentioned change has been undone by "[PATCH] rtlwifi: rtl8192ce: Fix loading of incorrect firmware". After applying this patch (Tested with kernel v4.9 and v4.10-rc7) the second issue is resolved, while the first  one remains.

The patch is included in mainline kernel v4.9.10 so this problem(#2) will hopefully be fixed with the next kernel upgrade.

The patch is included in mainline kernel v4.9.10 so this problem(#2) will hopefully be fixed with the next kernel upgrade.

(In reply to Tobias Guggenmos from comment #26)
> The patch is included in mainline kernel v4.9.10 so this problem(#2) will
> hopefully be fixed with the next kernel upgrade.

I load rtl8192ce module for 4.9.10 is no problem.

I download Linux 4.9.10 kernel source code from www.kernel.org, and build new rtl8192ce code:

$ cd ./drivers/net/wireless/realtek/rtlwifi/rtl8192ce
$ sudo make -C /lib/modules/`uname -r`/build M=`pwd` modules
$ sudo make -C /lib/modules/`uname -r`/build M=`pwd` modules_install

and remove old rtl8192ce module in memory, and load new module to memory:

$ sudo rmmod rtl8192ce
$ sudo insmod /lib/modules/`uname -r`/extra/rtl8192ce.ko

Now, it's ok.

The Bug discussed since at least comment 7 should have been fixed with the latest kernel update (4.9.10). Does the issue persist after upgrading and rebooting? 

On my system everything works normal again, now.

On my system (4.9.11-200.fc25) works too!

Also working on Lenovo E525 thinkpad

Thanks everyone for testing. I'm going to close this bug. If the problem shows up again, please open a new bug.