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From:   Chris Chiu <chiu@endlessm.com>
Date:   Mon, 3 Feb 2020 10:51:56 +0800
Message-ID: <CAB4CAwd6AanNEMyKDmkEPREbqUA_Q_iQ2oJ_UUw7rhFvk5eWfg@mail.gmail.com>
Subject: Fails to lauch X on laptop with Ryzen 7 4700U
To:     Alexander.Deucher@amd.com, christian.koenig@amd.com,
        David1.Zhou@amd.com, amd-gfx@lists.freedesktop.org,
        dri-devel <dri-devel@lists.freedesktop.org>,
        Linux Kernel <linux-kernel@vger.kernel.org>,
        Linux Upstreaming Team <linux@endlessm.com>
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X-Mailing-List: linux-kernel@vger.kernel.org

We are working with new laptops that have the Ryzen 7 4700U.

It fails to launch X so I can only access via the virtual terminal.
I tried with the latest mainline kernel and kernel from
https://cgit.freedesktop.org/~agd5f/linux but no luck. I also boot
the kernel with parameter amdgpu.exp_hw_support=1, but
the system freezes after loading amdgpu and I can't even switch
to the virtual terminal.

I post the bug description and related information on
https://gitlab.freedesktop.org/drm/amd/issues/1031.

Please kindly advise what I should do next.

Thanks
Chris