RTL8852BE wifi no longer working after 6.11 upgrade

RTL8852BE wifi no longer working after 6.11 upgrade

[Marcel Weißenbach]

Hi there,
 
i upgraded my Archlinux testing setup from 6.10.9 to 6.11 and noticed that my wifi is no longer working. Here is the output from the working 6.10.x Kernel
 
04:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8852BE PCIe 802.11ax Wireless Network Controller 
       Subsystem: AzureWave Device 5470 
       Kernel driver in use: rtw89_8852be 
       Kernel modules: rtw89_8852be
 
On 6.11, loading the Kernel Module fails.
 
After veryfing it is not an Archlinux issue by manually building the Kernel from kernel.org manually, i can verify, it happens with an vanilla Kernel too.
 
Here are the relevant parts from dmesg
[...]
[    4.687462] rtw89_8852be 0000:04:00.0: [ERR]FWDL path ready 
[    4.687472] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x1E0 = 0x23 
[    4.687477] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x83F0 = 0x70000 
[    4.687486] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    4.687501] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    4.687516] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f3b 
[    4.687531] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    4.687546] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f3f 
[    4.687561] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    4.687576] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f57 
[    4.687591] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    4.687606] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f4f 
[    4.687621] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    4.687636] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccdf 
[    4.687651] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    4.687666] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f37 
[    4.687681] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    4.687696] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f53 
[    6.376153] rtw89_8852be 0000:04:00.0: [ERR]FWDL path ready 
[    6.376163] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x1E0 = 0x23 
[    6.376168] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x83F0 = 0x70000 
[    6.376178] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f4b 
[    6.376193] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f43 
[    6.376208] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f4b 
[    6.376223] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f41 
[    6.376238] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f3f 
[    6.376253] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    6.376268] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    6.376283] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f57 
[    6.376298] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f47 
[    6.376313] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    6.376327] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    6.376342] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccdf 
[    6.376357] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f35 
[    6.376372] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    6.376387] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    7.135332] r8169 0000:05:00.0 enp5s0: Link is Up - 1Gbps/Full - flow control off 
[    8.097173] rtw89_8852be 0000:04:00.0: [ERR]FWDL path ready 
[    8.097183] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x1E0 = 0x23 
[    8.097188] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x83F0 = 0x70000 
[    8.097197] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f53 
[    8.097212] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f4b 
[    8.097227] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    8.097242] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f2f 
[    8.097257] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f4b 
[    8.097272] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    8.097287] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    8.097302] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f31 
[    8.097317] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f33 
[    8.097332] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f33 
[    8.097347] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccdb 
[    8.097362] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f33 
[    8.097377] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    8.097391] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    8.097406] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccdb 
[    9.817051] rtw89_8852be 0000:04:00.0: [ERR]FWDL path ready 
[    9.817059] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x1E0 = 0x23 
[    9.817063] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x83F0 = 0x70000 
[    9.817072] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    9.817087] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    9.817102] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccdf 
[    9.817117] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccdf 
[    9.817133] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccf7 
[    9.817147] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f3d 
[    9.817162] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f35 
[    9.817177] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    9.817192] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    9.817207] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[    9.817222] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f55 
[    9.817237] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f53 
[    9.817252] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f47 
[    9.817267] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f47 
[    9.817282] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[   11.536604] rtw89_8852be 0000:04:00.0: [ERR]FWDL path ready 
[   11.536615] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x1E0 = 0x23 
[   11.536621] rtw89_8852be 0000:04:00.0: [ERR]fwdl 0x83F0 = 0x70000 
[   11.536632] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f35 
[   11.536648] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f55 
[   11.536664] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890cce1 
[   11.536680] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f7f 
[   11.536697] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[   11.536713] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890cce3 
[   11.536730] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f31 
[   11.536746] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[   11.536762] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f4b 
[   11.536778] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f35 
[   11.536794] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f47 
[   11.536809] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[   11.536825] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f47 
[   11.536842] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb8901f57 
[   11.536859] rtw89_8852be 0000:04:00.0: [ERR]fw PC = 0xb890ccd9 
[   11.536874] rtw89_8852be 0000:04:00.0: failed to setup chip information 
[   11.537455] rtw89_8852be 0000:04:00.0: probe with driver rtw89_8852be failed with error -110
[...]
 
The whole dmesg can be found here (with an Download button on the top right): https://ignaz.org/nextcloud/index.php/s/gMtZCxS5wjtWSYc
 
 
 
Best Regards
Marcel
 
#regzbot introduced: v6.10.9..v6.11

RE: RTL8852BE wifi no longer working after 6.11 upgrade

[Ping-Ke Shih]

Marcel Weißenbach <mweissenbach@ignaz.org> wrote:
> 
> Hi there,
> 
> i upgraded my Archlinux testing setup from 6.10.9 to 6.11 and noticed that my wifi is no longer working.

Checking the commits between 6.10.9 and 6.11, I feel the cause is
  1fd4b3fe52ef ("wifi: rtw89: pci: support 36-bit PCI DMA address")

Seemingly there is 36-bit PCI DMA interoperability on RTL8852BE.
Could you please try below to comment out the function? 

diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c
index 02afeb3acce4..039fc329c6f7 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.c
+++ b/drivers/net/wireless/realtek/rtw89/pci.c
@@ -3061,7 +3061,7 @@ static int rtw89_pci_setup_mapping(struct rtw89_dev *rtwdev,
                goto err;
        }

-       ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(36));
+       ret = -1;//dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(36));
        if (!ret) {
                rtwpci->enable_dac = true;
                rtw89_pci_cfg_dac(rtwdev);


If this helps, please provide your DMI info by 'sudo dmidecode'. I will build
a quirk table for it since I don't know what the exact settings affect this.

RE: RTL8852BE wifi no longer working after 6.11 upgrade

[Marcel Weißenbach]

Setting ret to -1 did the job, wifi works again as expected.
 
Here is the output of dmidecode
https://ignaz.org/nextcloud/index.php/s/tZdjYYdyeWpHPH4
 
Thanks a lot
 
"Ping-Ke Shih" pkshih@realtek.com – 2024年9月18日 15:02
> Marcel Weißenbach <mweissenbach@ignaz.org> wrote:
> > 
> > Hi there,
> > 
> > i upgraded my Archlinux testing setup from 6.10.9 to 6.11 and noticed that my wifi is no longer working.
> 
> Checking the commits between 6.10.9 and 6.11, I feel the cause is
> 1fd4b3fe52ef ("wifi: rtw89: pci: support 36-bit PCI DMA address")
> 
> Seemingly there is 36-bit PCI DMA interoperability on RTL8852BE.
> Could you please try below to comment out the function? 
> 
> diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c
> index 02afeb3acce4..039fc329c6f7 100644
> --- a/drivers/net/wireless/realtek/rtw89/pci.c
> +++ b/drivers/net/wireless/realtek/rtw89/pci.c
> @@ -3061,7 +3061,7 @@ static int rtw89_pci_setup_mapping(struct rtw89_dev *rtwdev,
> goto err;
> }
> 
> - ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(36));
> + ret = -1;//dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(36));
> if (!ret) {
> rtwpci->enable_dac = true;
> rtw89_pci_cfg_dac(rtwdev);
> 
> 
> If this helps, please provide your DMI info by 'sudo dmidecode'. I will build
> a quirk table for it since I don't know what the exact settings affect this.
> 
>

RE: RTL8852BE wifi no longer working after 6.11 upgrade

[Ping-Ke Shih]

Marcel Weißenbach <mweissenbach@ignaz.org> wrote:
> Setting ret to -1 did the job, wifi works again as expected.
> 
> Here is the output of dmidecode
> https://ignaz.org/nextcloud/index.php/s/tZdjYYdyeWpHPH4
> 

I wrote a quirk according to your dmidecode [1]. Please try if this can
still work to you. If yes, please help to reply a Tested-by tag there.
Thanks. 

[1] https://lore.kernel.org/linux-wireless/20240918085551.54611-1-pkshih@realtek.com/T/#u

RE: RTL8852BE wifi no longer working after 6.11 upgrade

[Marcel Weißenbach]

First of all, thank you so much for your time and work!
 
I hope i don't cause any confusion and this question may be based on my lack of  understanding the patch, i almost don't dare to ask, but does this quirk only gets into affect, when someone uses the same mainboard i use? Is this an rather rare case that probably won't effect other people?
 
I can't judge that so please don't get me wrong, but i feel a bit uneasy about this. I assume that most fist time Linux users that have similar (but not the same) platform, where this quirk will not get applied and they end up with non-working wifi, just notice that wifi doesn't work and give up on Linux and remember it as "My Wifi even didn't work there".
 
As a long time Gentoo user, i have the capability to build my own kernel and provide feedback that can help fix this issue, but i assume most users don't. I would assume an Ubuntu users will just remove the Ubuntu partition and calls it a day continuing using Windows. I am a bit worried and wonder, if there maybe a way to fix that, that is independent on my specific hardware/mainboard.
 
Of course, feel free to correct me if i am getting something wrong here, im neither an Kernel nor C expert and thank you for your time again.
 
"Ping-Ke Shih" pkshih@realtek.com – 2024年9月18日 18:00
> Marcel Weißenbach <mweissenbach@ignaz.org> wrote:
> > Setting ret to -1 did the job, wifi works again as expected.
> > 
> > Here is the output of dmidecode
> > https://ignaz.org/nextcloud/index.php/s/tZdjYYdyeWpHPH4
> > 
> 
> I wrote a quirk according to your dmidecode [1]. Please try if this can
> still work to you. If yes, please help to reply a Tested-by tag there.
> Thanks. 
> 
> [1] https://lore.kernel.org/linux-wireless/20240918085551.54611-1-pkshih@realtek.com/T/#u
> 
>

RE: RTL8852BE wifi no longer working after 6.11 upgrade

[Ping-Ke Shih]

Marcel Weißenbach <mweissenbach@ignaz.org> wrote:
> First of all, thank you so much for your time and work!
> 
> I hope i don't cause any confusion and this question may be based on my lack of  understanding the patch,
> i almost don't dare to ask, but does this quirk only gets into affect, when someone uses the same mainboard
> i use? Is this an rather rare case that probably won't effect other people?
> 
> I can't judge that so please don't get me wrong, but i feel a bit uneasy about this. I assume that most
> fist time Linux users that have similar (but not the same) platform, where this quirk will not get applied
> and they end up with non-working wifi, just notice that wifi doesn't work and give up on Linux and remember
> it as "My Wifi even didn't work there".
> 
> As a long time Gentoo user, i have the capability to build my own kernel and provide feedback that can help
> fix this issue, but i assume most users don't. I would assume an Ubuntu users will just remove the Ubuntu
> partition and calls it a day continuing using Windows. I am a bit worried and wonder, if there maybe a way
> to fix that, that is independent on my specific hardware/mainboard.
> 
> Of course, feel free to correct me if i am getting something wrong here, im neither an Kernel nor C expert
> and thank you for your time again.
> 

You are right. I was not aware of that. I will discuss people internally and reconsider the solution. 

RE: RTL8852BE wifi no longer working after 6.11 upgrade

[Ping-Ke Shih]

Ping-Ke Shih wrote:
> Marcel Weißenbach <mweissenbach@ignaz.org> wrote:
> > First of all, thank you so much for your time and work!
> >
> > I hope i don't cause any confusion and this question may be based on my lack of  understanding the patch,
> > i almost don't dare to ask, but does this quirk only gets into affect, when someone uses the same mainboard
> > i use? Is this an rather rare case that probably won't effect other people?
> >
> > I can't judge that so please don't get me wrong, but i feel a bit uneasy about this. I assume that most
> > fist time Linux users that have similar (but not the same) platform, where this quirk will not get applied
> > and they end up with non-working wifi, just notice that wifi doesn't work and give up on Linux and remember
> > it as "My Wifi even didn't work there".
> >
> > As a long time Gentoo user, i have the capability to build my own kernel and provide feedback that can
> help
> > fix this issue, but i assume most users don't. I would assume an Ubuntu users will just remove the Ubuntu
> > partition and calls it a day continuing using Windows. I am a bit worried and wonder, if there maybe a
> way
> > to fix that, that is independent on my specific hardware/mainboard.
> >
> > Of course, feel free to correct me if i am getting something wrong here, im neither an Kernel nor C expert
> > and thank you for your time again.
> >
> 
> You are right. I was not aware of that. I will discuss people internally and reconsider the solution.

With internal discussion, the early chips including RTL8852BE have interoperability
problem with some platforms, so we decide to rollback to 32-bit DMA for these chips,
and only enable 36-bit DMA for tested platforms. 

Please help to test if [1] works to you. 

[1] https://lore.kernel.org/linux-wireless/20240924021633.19861-1-pkshih@realtek.com/T/#u

RE: RTL8852BE wifi no longer working after 6.11 upgrade

[Marcel Weißenbach]

Works as expected, thank you very much =)
 
"Ping-Ke Shih" pkshih@realtek.com – 2024年9月24日 11:29
> Ping-Ke Shih wrote:
> > Marcel Weißenbach <mweissenbach@ignaz.org> wrote:
> > > First of all, thank you so much for your time and work!
> > >
> > > I hope i don't cause any confusion and this question may be based on my lack of understanding the patch,
> > > i almost don't dare to ask, but does this quirk only gets into affect, when someone uses the same mainboard
> > > i use? Is this an rather rare case that probably won't effect other people?
> > >
> > > I can't judge that so please don't get me wrong, but i feel a bit uneasy about this. I assume that most
> > > fist time Linux users that have similar (but not the same) platform, where this quirk will not get applied
> > > and they end up with non-working wifi, just notice that wifi doesn't work and give up on Linux and remember
> > > it as "My Wifi even didn't work there".
> > >
> > > As a long time Gentoo user, i have the capability to build my own kernel and provide feedback that can
> > help
> > > fix this issue, but i assume most users don't. I would assume an Ubuntu users will just remove the Ubuntu
> > > partition and calls it a day continuing using Windows. I am a bit worried and wonder, if there maybe a
> > way
> > > to fix that, that is independent on my specific hardware/mainboard.
> > >
> > > Of course, feel free to correct me if i am getting something wrong here, im neither an Kernel nor C expert
> > > and thank you for your time again.
> > >
> > 
> > You are right. I was not aware of that. I will discuss people internally and reconsider the solution.
> 
> With internal discussion, the early chips including RTL8852BE have interoperability
> problem with some platforms, so we decide to rollback to 32-bit DMA for these chips,
> and only enable 36-bit DMA for tested platforms. 
> 
> Please help to test if [1] works to you. 
> 
> [1] https://lore.kernel.org/linux-wireless/20240924021633.19861-1-pkshih@realtek.com/T/#u
> 
>