Re: rtw88: WiFi card is not offloaded properly when suspending the OS

Hi Ping-Ke,

In short I should build the LTS kernel using the provided source with 
all the module patches applied one by one, correct?

If so, should I also set the modprobe.d options plus disable IOMMU?

After I know this I can start testing.


Small update: the .35 LTS kernel has no issues for me, while 7.0.11 works.

I was able to get my laptop to sleep a few times, but at a certain point 
the issue happened.

It is a bit hard to replicate the issue, so I will try my best.


On 2026-06-08 03:32, Ping-Ke Shih wrote:
> Giovanni Santini <[email protected]> wrote:
>> Jun 02 17:25:33 archlinux-tug kernel: rtw88_8822ce 0000:03:00.0: failed
>> to send h2c command
>> Jun 02 17:25:33 archlinux-tug kernel: rtw88_8822ce 0000:03:00.0: failed
>> to send h2c command
>> Jun 02 17:25:33 archlinux-tug kernel: rtw88_8822ce 0000:03:00.0: failed
>> to send h2c command
>> Jun 02 17:25:33 archlinux-tug kernel: rtw88_8822ce 0000:03:00.0: failed
>> to send h2c command
>> Jun 02 17:25:36 archlinux-tug kernel: rtw88_8822ce 0000:03:00.0: failed
>> to poll offset=0x5 mask=0x2 value=0x0
>> Jun 02 17:25:36 archlinux-tug kernel: ------------[ cut here ]------------
>> Jun 02 17:25:36 archlinux-tug kernel: failed to read DBI register,
>> addr=0x0719
> Add these below to see if it can help.
>
> sudo nano /etc/modprobe.d/rtw88.conf
> options rtw88_core disable_lps_deep=y
> options rtw88_pci disable_aspm=y
>
> After cold reboot, check /sys/modules/rtw88_*/paramters/* to see if
> the modification takes effect.
>
>> I'm attaching the full boot log, if you need a fresh one I can provide it.
> Before "failed to poll ..." log, I also see
>
> Jun 02 17:25:02 archlinux-tug kernel: rtw88_8822ce 0000:03:00.0: AMD-Vi:
>   Event logged [IO_PAGE_FAULT domain=0x000e address=0xae9668bc flags=0x0000]
>
> Please try to turn off IOMMU by editing /etc/default/grub
> GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amd_iommu=off iommu=off"
>
> And then update-grub
>
>> I run ArchLinux with KDE Plasma, for networking I use NetworkManager and
>> wpa_supplicant.
>>
>> If you would like me to run tests with e.g. just iwd I can do so, just
>> let me know what setup you would like me to have.
>>
>> I do not have this issue with the LTS kernel 6.18.34. This affects 7.0
>> and 7.1.
>> I believe this issue was not present in < 7 kernels, but I cannot guarantee.
>> I can however downgrade to previous kernels to understand where the
>> issue was introduced.
> The commits between 6.18.34 ~ 7.0.10 are quite few, and I can't find the
> one that can affect the behavior. Please switch your kernel back to 6.18.34,
> and apply rtw88's patches added until 7.0.10.
>
> Since the last commit of 6.18 is fce6fee0817b8899e0ee38ab6b98f0d7e939ceed
>
> Please use below commands to get the (20) patches:
> drivers/net/wireless/realtek/rtw88$ git format-patch v7.0.10...fce6fee0817b8899e0ee38ab6b98f0d7e939ceed -- ./
>
> Then you can add them one by one to see which one is the cause.
>
> The git repository you need is:
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
>
>
> Ping-Ke
>
>
-- 
Giovanni Santini