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Bug#1038720: Missing hyperv_fb.ko in debian 12.0 kernel image 6.1.0-9-amd64

Started byRSA <rsa@0xc3.fr>
First post2023-06-20 15:50 +0200
Last post2023-06-21 10:30 +0200
Articles 5 — 3 participants

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  Bug#1038720: Missing hyperv_fb.ko in debian 12.0 kernel image 6.1.0-9-amd64 RSA <rsa@0xc3.fr> - 2023-06-20 15:50 +0200
    Bug#1038720: Missing hyperv_fb.ko in debian 12.0 kernel image 6.1.0-9-amd64 Bastian Blank <waldi@debian.org> - 2023-06-20 17:10 +0200
      Bug#1038720: Missing hyperv_fb.ko in debian 12.0 kernel image 6.1.0-9-amd64 Ben Hutchings <ben@decadent.org.uk> - 2023-06-20 19:00 +0200
        Bug#1038720: Missing hyperv_fb.ko in debian 12.0 kernel image 6.1.0-9-amd64 Bastian Blank <waldi@debian.org> - 2023-06-20 23:50 +0200
        Bug#1038720: Missing hyperv_fb.ko in debian 12.0 kernel image 6.1.0-9-amd64 RSA <rsa@0xc3.fr> - 2023-06-21 10:30 +0200

#79373 — Bug#1038720: Missing hyperv_fb.ko in debian 12.0 kernel image 6.1.0-9-amd64

FromRSA <rsa@0xc3.fr>
Date2023-06-20 15:50 +0200
SubjectBug#1038720: Missing hyperv_fb.ko in debian 12.0 kernel image 6.1.0-9-amd64
Message-ID<GIJU5-hgy8-3@gated-at.bofh.it>

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Package: linux-image-6.1.0-9-amd64
Version: 6.1.27-1

Hello, I think kernel module hyperv_fb.ko is missing in the package. It was present in version 5.10.0-22 before upgrading to debian 12.

$ find /lib/modules/5.10.0-23-amd64 -name hyperv_fb.ko
/lib/modules/5.10.0-23-amd64/kernel/drivers/video/fbdev/hyperv_fb.ko
$ find /lib/modules/6.1.0-9-amd64 -name hyperv_fb.ko

The impact is a regression when using debian as an Hyper-V vm. Screen resolution can not be changed anymore when editing GRUB_CMDLINE_LINUX_DEFAULT.

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#79375

FromBastian Blank <waldi@debian.org>
Date2023-06-20 17:10 +0200
Message-ID<GIL9v-hhu9-5@gated-at.bofh.it>
In reply to#79373
On Tue, Jun 20, 2023 at 03:32:19PM +0200, RSA wrote:
> Hello, I think kernel module hyperv_fb.ko is missing in the package. It was present in version 5.10.0-22 before upgrading to debian 12.
> 
> $ find /lib/modules/5.10.0-23-amd64 -name hyperv_fb.ko
> /lib/modules/5.10.0-23-amd64/kernel/drivers/video/fbdev/hyperv_fb.ko
> $ find /lib/modules/6.1.0-9-amd64 -name hyperv_fb.ko
> 
> The impact is a regression when using debian as an Hyper-V vm. Screen resolution can not be changed anymore when editing GRUB_CMDLINE_LINUX_DEFAULT.

This was replaced by hyperv_drm, which provides a standard mode
selection output.

Not sure what you did with the kernel command line.

Bastian

-- 
Where there's no emotion, there's no motive for violence.
		-- Spock, "Dagger of the Mind", stardate 2715.1

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#79377

FromBen Hutchings <ben@decadent.org.uk>
Date2023-06-20 19:00 +0200
Message-ID<GIMRX-hik6-1@gated-at.bofh.it>
In reply to#79375

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On Tue, 2023-06-20 at 17:03 +0200, Bastian Blank wrote:
> On Tue, Jun 20, 2023 at 03:32:19PM +0200, RSA wrote:
> > Hello, I think kernel module hyperv_fb.ko is missing in the package. It was present in version 5.10.0-22 before upgrading to debian 12.
> > 
> > $ find /lib/modules/5.10.0-23-amd64 -name hyperv_fb.ko
> > /lib/modules/5.10.0-23-amd64/kernel/drivers/video/fbdev/hyperv_fb.ko
> > $ find /lib/modules/6.1.0-9-amd64 -name hyperv_fb.ko
> > 
> > The impact is a regression when using debian as an Hyper-V vm. Screen resolution can not be changed anymore when editing GRUB_CMDLINE_LINUX_DEFAULT.
> 
> This was replaced by hyperv_drm, which provides a standard mode
> selection output.

...although we do still build hyperv_fb for the cloud-amd64 flavour,
which seems like a mistake.

Ben.

> Not sure what you did with the kernel command line.

-- 
Ben Hutchings
compatible: Gracefully accepts erroneous data from any source

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#79392

FromBastian Blank <waldi@debian.org>
Date2023-06-20 23:50 +0200
Message-ID<GIRoB-hl9a-1@gated-at.bofh.it>
In reply to#79377
On Tue, Jun 20, 2023 at 06:50:10PM +0200, Ben Hutchings wrote:
> > This was replaced by hyperv_drm, which provides a standard mode
> > selection output.
> ...although we do still build hyperv_fb for the cloud-amd64 flavour,
> which seems like a mistake.

Because the cloud-amd64 flavour disables DRM alltogether.

Bastian

-- 
Each kiss is as the first.
		-- Miramanee, Kirk's wife, "The Paradise Syndrome",
		   stardate 4842.6

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#79398

FromRSA <rsa@0xc3.fr>
Date2023-06-21 10:30 +0200
Message-ID<GJ1nX-hrCZ-9@gated-at.bofh.it>
In reply to#79377
Many thanks for your responses. 
Indeed, hyperv_drm is working as expected. 
My bad, sorry for annoying you with this.

RSA

> On 20 jun 2023, at 18:50, Ben Hutchings <ben@decadent.org.uk> wrote:
> 
> On Tue, 2023-06-20 at 17:03 +0200, Bastian Blank wrote:
>>> On Tue, Jun 20, 2023 at 03:32:19PM +0200, RSA wrote:
>>> Hello, I think kernel module hyperv_fb.ko is missing in the package. It was present in version 5.10.0-22 before upgrading to debian 12.
>>> 
>>> $ find /lib/modules/5.10.0-23-amd64 -name hyperv_fb.ko
>>> /lib/modules/5.10.0-23-amd64/kernel/drivers/video/fbdev/hyperv_fb.ko
>>> $ find /lib/modules/6.1.0-9-amd64 -name hyperv_fb.ko
>>> 
>>> The impact is a regression when using debian as an Hyper-V vm. Screen resolution can not be changed anymore when editing GRUB_CMDLINE_LINUX_DEFAULT.
>> 
>> This was replaced by hyperv_drm, which provides a standard mode
>> selection output.
> 
> ...although we do still build hyperv_fb for the cloud-amd64 flavour,
> which seems like a mistake.
> 
> Ben.
> 
>> Not sure what you did with the kernel command line.
> 
> -- 
> Ben Hutchings
> compatible: Gracefully accepts erroneous data from any source
> 

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