From: James Cameron <quozl@laptop.org>
To: Nik Nyby <nikolas@gnu.org>
Cc: Larry Finger <Larry.Finger@lwfinger.net>,
linux-wireless@vger.kernel.org, pkshih@realtek.com
Subject: Re: rtl8821ae dbi read question
Date: Mon, 6 Nov 2017 08:29:47 +1100 [thread overview]
Message-ID: <20171105212947.GB26699@us.netrek.org> (raw)
In-Reply-To: <6912fa90-4b21-c325-993b-27fed3c75293@gnu.org>
On Sun, Nov 05, 2017 at 04:15:36PM -0500, Nik Nyby wrote:
> I also want to note that adding rtl8821ae.aspm=0 to my grub kernel
> boot command doesn't fix my problem. (I'm building this driver into
> the kernel, not as a module). My connection dropping problem is
> fixed only if I comment out the aspm init code in the driver, per
> this patch:
> https://patchwork.kernel.org/patch/9951511/
Interesting; that patch was for testing, and did more than just aspm=0.
Check for a BIOS update from your vendor. Device registers can be
configured and persist despite warm reboot, which implies there is no
register reset in driver start or device reset, which further implies
that the BIOS can easily affect the outcome.
Check also for different behaviour after cold reboot; that is a power
down for 30 seconds then power up.
Do you yet have a known working kernel to bisect against?
--
James Cameron
http://quozl.netrek.org/
next prev parent reply other threads:[~2017-11-05 21:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-04 23:27 rtl8821ae dbi read question Nik Nyby
2017-11-05 16:50 ` Larry Finger
2017-11-05 20:53 ` Nik Nyby
2017-11-06 1:46 ` Larry Finger
2017-11-05 21:15 ` Nik Nyby
2017-11-05 21:29 ` James Cameron [this message]
2017-11-06 2:09 ` Larry Finger
2017-11-06 4:09 ` Nik Nyby
2017-11-06 13:52 ` Larry Finger
2017-11-19 0:39 ` Nik Nyby
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