rtw_8821ce driver in kernel 5.9.1: wifi module inactive

rtw_8821ce driver in kernel 5.9.1: wifi module inactive

[Michal TOMA]

Hi,

On OpenSuse Tumbleweed rtw_8821ce driver breaks wifi.

-> uname -a
Linux Host-001 5.9.1-1-default #1 SMP Mon Oct 26 07:02:23 UTC 2020 (435e92d) x86_64 x86_64 x86_64 GNU/Linux

/sbin/lspci -nnk | grep -iA3 net
07:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
        Subsystem: Lenovo Device [17aa:c024]
        Kernel driver in use: rtw_8821ce
        Kernel modules: rtw88_8821ce, wl
08:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 10)
        Subsystem: Lenovo Device [17aa:38cf]
        Kernel driver in use: r8168
        Kernel modules: r8169, r8168


->cat /proc/net/wireless 
Inter-| sta-|   Quality        |   Discarded packets               | Missed | WE
 face | tus | link level noise |  nwid  crypt   frag  retry   misc | beacon | 22


->iwconfig wlp7s0
wlp7s0    IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off

->iwlist wlp7s0 scan
wlp7s0    No scan results


->rfkill list 
0: ideapad_wlan: Wireless LAN
        Soft blocked: no
        Hard blocked: no
1: ideapad_bluetooth: Bluetooth
        Soft blocked: yes
        Hard blocked: no
2: hci0: Bluetooth
        Soft blocked: yes
        Hard blocked: no
3: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no


->dmesg | grep 8821
[    7.075396] rtw_8821ce 0000:07:00.0: Firmware version 24.5.0, H2C version 12
[    7.764587] rtw_8821ce 0000:07:00.0 wlp7s0: renamed from wlan0
[    8.354754] rtw_8821ce 0000:07:00.0: start vif 28:39:26:ab:b4:5d on port 0
[    8.358871] rtw_8821ce 0000:07:00.0: stop vif 28:39:26:ab:b4:5d on port 0
[    8.874899] rtw_8821ce 0000:07:00.0: start vif e2:57:07:37:e3:1e on port 0
[  421.023270] rtw_8821ce 0000:07:00.0: stop vif e2:57:07:37:e3:1e on port 0
[  421.543601] rtw_8821ce 0000:07:00.0: start vif fe:92:51:d5:45:b5 on port 0
[  833.018457] rtw_8821ce 0000:07:00.0: stop vif fe:92:51:d5:45:b5 on port 0
[  833.540507] rtw_8821ce 0000:07:00.0: start vif 0e:7e:da:5f:c3:0d on port 0
[ 1245.043076] rtw_8821ce 0000:07:00.0: stop vif 0e:7e:da:5f:c3:0d on port 0
[ 1245.565253] rtw_8821ce 0000:07:00.0: start vif be:74:9e:7b:ed:4b on port 0
And confinues likes this indefinitely


->lshw -C network
  *-network                 
       description: Wireless interface
       product: RTL8821CE 802.11ac PCIe Wireless Network Adapter
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: wlp7s0
       version: 00
       serial: be:1c:8a:79:49:d6
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtw_8821ce driverversion=5.9.1-1-default firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:142 ioport:4000(size=256) memory:a4300000-a430ffff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:08:00.0
       logical name: enp8s0
       version: 10
       serial: f8:75:a4:08:eb:06
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8168 driverversion=8.048.03-NAPI duplex=full ip=192.168.1.3 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
       resources: irq:140 ioport:3000(size=256) memory:a4204000-a4204fff memory:a4200000-a4203fff


Happy to provide more information if needed.

Michal

Re: rtw_8821ce driver in kernel 5.9.1: wifi module inactive

[Larry Finger]

On 10/29/20 11:47 AM, Michal TOMA wrote:
> ->rfkill list
> 0: ideapad_wlan: Wireless LAN
>          Soft blocked: no
>          Hard blocked: no
> 1: ideapad_bluetooth: Bluetooth
>          Soft blocked: yes
>          Hard blocked: no
> 2: hci0: Bluetooth
>          Soft blocked: yes
>          Hard blocked: no
> 3: phy0: Wireless LAN
>          Soft blocked: no
>          Hard blocked: no


Those bluetooth soft blocks may stop wifi. Can you clear them?

Larry

Re: rtw_8821ce driver in kernel 5.9.1: wifi module inactive

[Michal TOMA]

On Friday, October 30, 2020 01:35:45 PM Larry Finger wrote:
> On 10/29/20 11:47 AM, Michal TOMA wrote:
> > ->rfkill list
> > 0: ideapad_wlan: Wireless LAN
> > 
> >          Soft blocked: no
> >          Hard blocked: no
> > 
> > 1: ideapad_bluetooth: Bluetooth
> > 
> >          Soft blocked: yes
> >          Hard blocked: no
> > 
> > 2: hci0: Bluetooth
> > 
> >          Soft blocked: yes
> >          Hard blocked: no
> > 
> > 3: phy0: Wireless LAN
> > 
> >          Soft blocked: no
> >          Hard blocked: no
> 
> Those bluetooth soft blocks may stop wifi. Can you clear them?
> 
> Larry

No change with soft blocks cleared:

rfkill unblock 1
rfkill unblock 2
rfkill list 
0: ideapad_wlan: Wireless LAN
        Soft blocked: no
        Hard blocked: no
1: ideapad_bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no
2: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
3: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no

iwlist wlp7s0 scan
wlp7s0    No scan results

Re: rtw_8821ce driver in kernel 5.9.1: wifi module inactive

[Larry Finger]

On 10/30/20 4:21 PM, Michal TOMA wrote:

> iwlist wlp7s0 scan
> 
> wlp7s0 No scan results
> 

You should move away from those obsolete commands (iwconfig, iwlist, etc.). The 
new command would be

sudo iw dev wlp7s0 scan

It might not make any difference, but the new ones are better.

Any additional messages between the start and stop vif messages in dmesg?

I do not have an 8821ce for testing' however, I am not aware of any changes in 
5.9.1 that should stop it from working/

Larry

Re: rtw_8821ce driver in kernel 5.9.1: wifi module inactive

[Larry Finger]

Michal,

My rtl8822ce works fine with 5.10.0-rc1 and 5.9.1 from openSUSE TW.

Larry

Re: rtw_8821ce driver in kernel 5.9.1: wifi module inactive

[Michal TOMA]

On Friday, October 30, 2020 05:23:53 PM Larry Finger wrote:
> On 10/30/20 4:21 PM, Michal TOMA wrote:
> > iwlist wlp7s0 scan
> > 
> > wlp7s0 No scan results
> 
> You should move away from those obsolete commands (iwconfig, iwlist, etc.).
> The new command would be
> 
> sudo iw dev wlp7s0 scan
> 
> It might not make any difference, but the new ones are better.
> 
> Any additional messages between the start and stop vif messages in dmesg?
> 
> I do not have an 8821ce for testing' however, I am not aware of any changes
> in 5.9.1 that should stop it from working/
> 
> Larry

iw dev wlp7s0 scan
returns nothing at all

No additionnal messages between the start vif and stop vif messages, this just 
goes on indefinitely:
[  832.419210] rtw_8821ce 0000:07:00.0: stop vif 2e:71:fe:88:e7:38 on port 0
[  832.940915] rtw_8821ce 0000:07:00.0: start vif 2e:7f:5e:d9:5e:45 on port 0
[ 1244.435074] rtw_8821ce 0000:07:00.0: stop vif 2e:7f:5e:d9:5e:45 on port 0
[ 1244.960984] rtw_8821ce 0000:07:00.0: start vif 5a:94:ec:c6:74:63 on port 0
[ 1656.506940] rtw_8821ce 0000:07:00.0: stop vif 5a:94:ec:c6:74:63 on port 0
[ 1657.040551] rtw_8821ce 0000:07:00.0: start vif aa:d0:5e:6a:0c:be on port 0
[ 2068.443729] rtw_8821ce 0000:07:00.0: stop vif aa:d0:5e:6a:0c:be on port 0
[ 2068.972402] rtw_8821ce 0000:07:00.0: start vif 5a:60:d3:11:e5:6b on port 0
[ 2480.455695] rtw_8821ce 0000:07:00.0: stop vif 5a:60:d3:11:e5:6b on port 0
[ 2480.976273] rtw_8821ce 0000:07:00.0: start vif 56:46:bd:44:4b:e3 on port 0
[ 2892.494486] rtw_8821ce 0000:07:00.0: stop vif 56:46:bd:44:4b:e3 on port 0
[ 2893.016142] rtw_8821ce 0000:07:00.0: start vif c6:66:3a:cc:8e:df on port 0

Michal

Re: rtw_8821ce driver in kernel 5.9.1: wifi module inactive

[Michal TOMA]

On Friday, October 30, 2020 08:30:16 PM Larry Finger wrote:
> Michal,
> 
> My rtl8822ce works fine with 5.10.0-rc1 and 5.9.1 from openSUSE TW.
> 
> Larry

I didn't try 5.10.0-rc1 yet.
I suspect some kind of deep sleep mode that seems to survive hard reboot.
I'm on a laptop where I can't remove the battery and I don't have a double 
boot to Windows to make a test.
As additionnal context, before kernel 5.9.1, I was using the rtl8821ce driver 
for openSUSE TW which packages the driver from the tomaspinho github repo: 
https://build.opensuse.org/package/view_file/home:Sauerland/rtl8821ce/rtl8821ce.spec?expand=0

And my wifi was working perfectly fine.

Since then I tried to blacklist the rtw_8821ce driver and use the rtl8821ce 
driver compiled for 5.9.1 and the behaviour is exactly the same: no wifi 
either when the rtl8821ce is loaded by the kernel.

Michal

Re: rtw_8821ce driver in kernel 5.9.1: wifi module inactive

[Larry Finger]

On 10/31/20 6:30 AM, Michal TOMA wrote:
> On Friday, October 30, 2020 08:30:16 PM Larry Finger wrote:
>> Michal,
>>
>> My rtl8822ce works fine with 5.10.0-rc1 and 5.9.1 from openSUSE TW.
>>
>> Larry
> 
> I didn't try 5.10.0-rc1 yet.
> I suspect some kind of deep sleep mode that seems to survive hard reboot.
> I'm on a laptop where I can't remove the battery and I don't have a double
> boot to Windows to make a test.
> As additionnal context, before kernel 5.9.1, I was using the rtl8821ce driver
> for openSUSE TW which packages the driver from the tomaspinho github repo:
> https://build.opensuse.org/package/view_file/home:Sauerland/rtl8821ce/rtl8821ce.spec?expand=0
> 
> And my wifi was working perfectly fine.
> 
> Since then I tried to blacklist the rtw_8821ce driver and use the rtl8821ce
> driver compiled for 5.9.1 and the behaviour is exactly the same: no wifi
> either when the rtl8821ce is loaded by the kernel.

Use the following to try the 5.10.0-rc1 kernel:

sudo zypper ar http://download.opensuse.org/repositories/Kernel:/HEAD/standard \ 
KOTD
sudo zypper dist-upgrade --allow-vendor-change --from kernel-repo
sudo zypper install kernel-default-5.10.rc1-3.1.g91029f0.x86_64

One warning: This kernel will not work with VirtualBox. There is one 
incompatibility with 5.10 that I still have to solve.

Larry