From: Rosen Penev <rosenp@gmail.com>
To: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Cc: linux-wireless <linux-wireless@vger.kernel.org>
Subject: Re: MT76x2U crashes XHCI driver on AMD Ryzen system
Date: Mon, 14 Jan 2019 12:06:12 -0800 [thread overview]
Message-ID: <CAKxU2N8ioMszBCyQcH7CVhgBdW4aj7yZ+kYQe14DCV5OSAnxrg@mail.gmail.com> (raw)
In-Reply-To: <20190114091841.GA23045@localhost.localdomain>
On Mon, Jan 14, 2019 at 1:18 AM Lorenzo Bianconi
<lorenzo.bianconi@redhat.com> wrote:
>
> > On Sun, Jan 13, 2019 at 11:00 AM Lorenzo Bianconi
> > <lorenzo.bianconi@redhat.com> wrote:
> > >
> > > >
> > > >
> > > > On Sun, Jan 13, 2019 at 5:33 AM, Lorenzo Bianconi <lorenzo.bianconi@redhat.com> wrote:
> > > >
> > > > Direct. No VM used. This is the only peripheral causing this issue.
> > > >
> > > > Is the device connected to a usb3.0 port? If so, could you please try to connect the dongle to a 2.0 one?
> > > >
> > > > I tried through a USB 2.0 port. Shouldn't make a difference as they both use the xhci driver.
> > > >
> > >
> > > mt76x2u supports scatter-gather on usb 3.0 (not on 2.0)
> > Tried a USB 3 port. Same result.
> > >
> > > > Could you please double check if IOMMU is enabled?
> > > >
> > >
> > > Have you tried to disable it? Does it make any difference?
> > No idea how. UEFI doesn't seem to show anything similar.
> >
> > Similar bug report: https://bugzilla.kernel.org/show_bug.cgi?id=202241
>
> You should be able to disable iommu using GRUB_CMDLINE_LINUX in
> /etc/default/grub (I guess setting iommu=off and reinstalling grub)
> https://wiki.gentoo.org/wiki/IOMMU_SWIOTLB
Yep. Working great now. I wonder what mt76 is doing to cause the crash though...
>
> Regards,
> Lorenzo
next prev parent reply other threads:[~2019-01-14 20:06 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-10 22:55 MT76x2U crashes XHCI driver on AMD Ryzen system Rosen Penev
2019-01-11 17:29 ` Lorenzo Bianconi
2019-01-11 19:01 ` Rosen Penev
2019-01-13 13:33 ` Lorenzo Bianconi
[not found] ` <1547404075.1582.0@smtp.gmail.com>
2019-01-13 19:00 ` Lorenzo Bianconi
2019-01-14 2:20 ` Rosen Penev
2019-01-14 3:13 ` Samuel Sieb
2019-01-14 9:18 ` Lorenzo Bianconi
2019-01-14 9:22 ` Tom Psyborg
2019-01-14 20:06 ` Rosen Penev [this message]
2019-01-15 9:04 ` Lorenzo Bianconi
2019-02-18 14:37 ` Stanislaw Gruszka
2019-02-18 14:37 ` Stanislaw Gruszka
2019-02-18 15:15 ` Lorenzo Bianconi
2019-02-18 15:15 ` Lorenzo Bianconi
2019-02-18 17:01 ` Robin Murphy
2019-02-19 11:08 ` Stanislaw Gruszka
2019-02-19 11:08 ` Stanislaw Gruszka
2019-02-26 10:05 ` Joerg Roedel
2019-02-26 10:05 ` Joerg Roedel
2019-02-26 10:34 ` Stanislaw Gruszka
2019-02-26 10:44 ` Joerg Roedel
2019-02-26 11:24 ` Stanislaw Gruszka
2019-02-28 9:04 ` Stanislaw Gruszka
2019-02-28 10:42 ` Stanislaw Gruszka
2019-02-28 12:19 ` Stanislaw Gruszka
2019-02-28 13:40 ` Joerg Roedel
2019-03-04 7:10 ` Stanislaw Gruszka
2019-03-04 7:20 ` Rosen Penev
2019-03-11 8:43 ` Stanislaw Gruszka
2019-03-11 8:43 ` Stanislaw Gruszka
2019-03-11 8:43 ` Stanislaw Gruszka
2019-03-11 9:03 ` [PATCH] iommu/amd: fix sg->dma_address for sg->offset bigger than PAGE_SIZE Stanislaw Gruszka
2019-03-11 9:03 ` Stanislaw Gruszka
2019-03-11 9:03 ` Stanislaw Gruszka
2019-03-11 15:47 ` Alexander Duyck
2019-03-11 15:47 ` Alexander Duyck
2019-03-11 15:47 ` Alexander Duyck
2019-03-12 7:08 ` Stanislaw Gruszka
2019-03-12 7:08 ` Stanislaw Gruszka
2019-03-12 15:18 ` Alexander Duyck
2019-03-12 15:18 ` Alexander Duyck
2019-03-12 15:18 ` Alexander Duyck
2019-03-13 9:03 ` [PATCH v2] " Stanislaw Gruszka
2019-03-13 9:03 ` Stanislaw Gruszka
2019-03-13 9:03 ` Stanislaw Gruszka
2019-03-18 10:17 ` Joerg Roedel
2019-03-18 10:17 ` Joerg Roedel
[not found] ` <20190325003822.2AB72213F2@mail.kernel.org>
2019-03-25 11:19 ` Stanislaw Gruszka
2019-03-12 7:13 ` MT76x2U crashes XHCI driver on AMD Ryzen system Stanislaw Gruszka
2019-03-12 7:13 ` Stanislaw Gruszka
2019-03-12 7:13 ` Stanislaw Gruszka
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