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Date:   Mon, 07 Jun 2021 09:14:32 +0000
To:     Larry Finger <Larry.Finger@lwfinger.net>,
        "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
From:   rtl8821cerfe2 <rtl8821cerfe2@protonmail.com>
Reply-To: rtl8821cerfe2 <rtl8821cerfe2@protonmail.com>
Subject: Re: rtw88: Guaranteed system freeze with RTL8821CE with RFE 2 type
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=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90 Original Me=
ssage =E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90=E2=80=90
On Wednesday, May 26, 2021 10:03 PM, Larry Finger <Larry.Finger@lwfinger.ne=
t> wrote:

> On 5/23/21 1:36 PM, rtl8821cerfe2 wrote:
>
> > On Thursday, May 20, 2021 8:51 AM, Larry Finger Larry.Finger@lwfinger.n=
et wrote:
> >
> > > On 5/19/21 4:00 PM, rtl8821cerfe2 wrote:
> > >
> > > > On Monday, May 10, 2021 4:49 PM, rtl8821cerfe2 rtl8821cerfe2@proton=
mail.com wrote:
> > > >
> > > > > On Monday, May 10, 2021 3:06 PM, rtl8821cerfe2 rtl8821cerfe2@prot=
onmail.com wrote:
> > > > > disable_lps_deep=3D1 did not help.
> > > > > The patch set called "rtw88: add scan notify to firmware and refi=
ne fw_feature check" may have fixed this problem. I've been running commit =
6ccdad5a58e18eac6b1335f05f94bf2b36146e00 from lwfinger/rtw88 for 3 days now=
 with no freeze. It was impossible to go more than a few hours without a fr=
eeze before these patches.
> > >
> > > Sounds good. I will keep porting the patches submitted to wreless-dri=
vers-next
> > > to the rtw88 repo at GitHub. I have no idea why this would preclude a=
 system
> > > freeze, but the Realtek guys might.
> > > Larry
> >
> > I spoke too soon. It does still freeze even with that patch set.
>
> Can you provide any more information about the freezes? As I recall, you =
did say
> that nothing was logged, but are the CPU fans working hard indicating the=
 the
> CPU is active? On the desktop, does the mouse pointer move?
>
> Larry

Sorry, I forgot to check my email.

Nothing was logged, the CPU fan was spinning at a normal speed which is bar=
ely audible, and the mouse pointer didn't move anymore.

Also, I tried the rtw_core option debug_mask=3D65535, which activates all t=
he debug messages available, hoping to capture some useful information duri=
ng the freeze, but with that option the freeze didn't happen. This suggests=
 to me a timing problem, but who knows. I'm mostly clueless about kernel pr=
ogramming.