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From: Davide Corrado <davide@davidecorrado.eu>
To: alexander.deucher@amd.com
Cc: airlied@linux.ie, linux-kernel@vger.kernel.org,
	dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
	christian.koenig@amd.com
Subject: amdgpu does not support 3840x2160@30Hz on kaveri apu
Date: Sat, 2 Jan 2021 19:50:33 +0100	[thread overview]
Message-ID: <CAM0ywnxwE9bRafJJZcg4w8GooXiDrJKV0gt+p9XJv=Y6HrmA0w@mail.gmail.com> (raw)


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hello, I'd like to report this issue that I am having since I updated my
display (samsung U28E590). The amdgpu does not support the native
resolution of my new monitor, which is 3840x2160*.* Using a HDMI or DVI
connection (I tried both, same results), the maximum supported refresh is
30Hz, so I'm stuck with that (don't have a displayport). The radeon module
works fine, I'm having this issue just when I use amdgpu (which I'd like
to, because performance is better).

Some info of my hardware:

cpu: AMD A10-7870K Radeon R7, 12 Compute Cores 4C+8G
kernel version (I tried different ones and different linux distros, same
results!): 5.9.16-200.fc33.x86_64 #1 SMP Mon Dec 21 14:08:22 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
Monitor: Samsung U28E590.

description:
If I boot the system using amdgpu and no video mode selection, the system
boots but I don't get a screen during boot and in wayland. I can connect
using ssh, so the system is running fine, just no display; If I force a
full HD resolution with "video:" in the kernel line, I can see the boot
process but the screen disappears when wayland starts (because the default
resolution is 3840x2160@30Hz). Using a full HD monitor results in no
issues, so it must be related to this very 4k resolution.

As I have already stated, radeon module works with the same
software/hardware configuration.
thanks you so much for your time :-)

-- 
Davide Corrado
UNIX Team Leader

Via Abramo Lincoln, 25
20129 Milano

Tel +39 3474259950

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https://lists.freedesktop.org/mailman/listinfo/dri-devel

WARNING: multiple messages have this Message-ID (diff)
From: Davide Corrado <davide@davidecorrado.eu>
To: alexander.deucher@amd.com
Cc: airlied@linux.ie, linux-kernel@vger.kernel.org,
	dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org,
	daniel@ffwll.ch, christian.koenig@amd.com
Subject: amdgpu does not support 3840x2160@30Hz on kaveri apu
Date: Sat, 2 Jan 2021 19:50:33 +0100	[thread overview]
Message-ID: <CAM0ywnxwE9bRafJJZcg4w8GooXiDrJKV0gt+p9XJv=Y6HrmA0w@mail.gmail.com> (raw)


[-- Attachment #1.1: Type: text/plain, Size: 1482 bytes --]

hello, I'd like to report this issue that I am having since I updated my
display (samsung U28E590). The amdgpu does not support the native
resolution of my new monitor, which is 3840x2160*.* Using a HDMI or DVI
connection (I tried both, same results), the maximum supported refresh is
30Hz, so I'm stuck with that (don't have a displayport). The radeon module
works fine, I'm having this issue just when I use amdgpu (which I'd like
to, because performance is better).

Some info of my hardware:

cpu: AMD A10-7870K Radeon R7, 12 Compute Cores 4C+8G
kernel version (I tried different ones and different linux distros, same
results!): 5.9.16-200.fc33.x86_64 #1 SMP Mon Dec 21 14:08:22 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
Monitor: Samsung U28E590.

description:
If I boot the system using amdgpu and no video mode selection, the system
boots but I don't get a screen during boot and in wayland. I can connect
using ssh, so the system is running fine, just no display; If I force a
full HD resolution with "video:" in the kernel line, I can see the boot
process but the screen disappears when wayland starts (because the default
resolution is 3840x2160@30Hz). Using a full HD monitor results in no
issues, so it must be related to this very 4k resolution.

As I have already stated, radeon module works with the same
software/hardware configuration.
thanks you so much for your time :-)

-- 
Davide Corrado
UNIX Team Leader

Via Abramo Lincoln, 25
20129 Milano

Tel +39 3474259950

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_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx

             reply	other threads:[~2021-01-04  8:39 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-02 18:50 Davide Corrado [this message]
2021-01-02 18:50 ` amdgpu does not support 3840x2160@30Hz on kaveri apu Davide Corrado
2021-01-03 11:07 ` Mike Lothian
2021-01-03 11:07   ` Mike Lothian
2021-01-03 11:15   ` Davide Corrado
2021-01-03 11:15     ` Davide Corrado
2021-01-04 11:10 ` Christian König
2021-01-04 11:10   ` Christian König
2021-01-04 12:04   ` Davide Corrado
2021-01-04 12:04     ` Davide Corrado
2021-01-04 12:37     ` Davide Corrado
2021-01-04 12:37       ` Davide Corrado
2021-01-04 12:44       ` Christian König
2021-01-04 12:44         ` Christian König
2021-01-04 14:01 ` Deucher, Alexander
2021-01-04 14:01   ` Deucher, Alexander
2021-01-04 15:01   ` Davide Corrado
2021-01-04 15:01     ` Davide Corrado

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