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Bug#761469: closed by Ben Hutchings <ben@decadent.org.uk> (Re: xen-linux-system-3.2.0-4-amd64: xen kernel appears misconfigured for uvesafb)



Ben,

So are you basically saying this problem is not fixable, and switching tty's can't be expected to work under xen?

Thanks,
Dylan


On Wed, Aug 12, 2015 at 9:31 AM, Debian Bug Tracking System <owner@bugs.debian.org> wrote:
This is an automatic notification regarding your Bug report
which was filed against the src:linux package:

#761469: xen-linux-system-3.2.0-4-amd64: xen kernel appears misconfigured for uvesafb

It has been closed by Ben Hutchings <ben@decadent.org.uk>.

Their explanation is attached below along with your original report.
If this explanation is unsatisfactory and you have not received a
better one in a separate message then please contact Ben Hutchings <ben@decadent.org.uk> by
replying to this email.


--
761469: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=761469
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems


---------- Forwarded message ----------
From: Ben Hutchings <ben@decadent.org.uk>
To: 761469-done@bugs.debian.org
Cc: 
Date: Wed, 12 Aug 2015 15:17:08 +0200
Subject: Re: xen-linux-system-3.2.0-4-amd64: xen kernel appears misconfigured for uvesafb
This is not a configuration issue.  uvesafb requires making BIOS calls,
but Xen PV domains do not have access to the BIOS.

Ben.

--
Ben Hutchings
Teamwork is essential - it allows you to blame someone else.



---------- Forwarded message ----------
From: Dylan Cali <calid1984@gmail.com>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Cc: 
Date: Sun, 14 Sep 2014 00:16:34 -0500
Subject: xen-linux-system-3.2.0-4-amd64: xen kernel appears misconfigured for uvesafb
Package: xen-linux-system-3.2.0-4-amd64
Version: 3.2.60-1+deb7u3
Severity: important

Dear Maintainer,

    Original symptom: under x11 switching tty's causes blank screen and monitor
going to sleep.

    Researching indicated this could be related to having a Nvidia graphics
card as well as a missing or misconfigured uvesafb module. [1]  Checking dmesg
showed the following error:

[    4.796570] uvesafb: Getting VBE info block failed (eax=0x4f00, err=0)
[    4.796635] uvesafb: vbe_init() failed with -22
[    4.796688] uvesafb: probe of uvesafb.0 failed with error -22

    Also /sys/bus/platform/drivers/uvesafb/uvesafb.0/vbe_modes did not exist.

    When booting with the standard Debian linux kernel instead of xen tty
switching under x11 worked as expected.  There were no errors in demsg output:

[    3.275811] uvesafb: NVIDIA Corporation, GF110 Board - 12610002, Chip Rev
, OEM: NVIDIA, VBE v3.0
[    3.385649] uvesafb: VBIOS/hardware doesn't support DDC transfers
[    3.385651] uvesafb: no monitor limits have been set, default refresh rate
will be used
[    3.386354] uvesafb: scrolling: redraw
[    3.563068] uvesafb: framebuffer at 0xf1000000, mapped to
0xffffc90006680000, using 14336k, total 14336k

    Also /sys/bus/platform/drivers/uvesafb/uvesafb.0/vbe_modes existed with
expected content.

    This seems to indicate the Debian xen kernel has not been correctly
configured for use with the uvesafb module.

[1] https://bbs.archlinux.org/viewtopic.php?id=120326



-- System Information:
Debian Release: 7.6
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'stable-updates')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.2.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages xen-linux-system-3.2.0-4-amd64 depends on:
ii  linux-image-3.2.0-4-amd64  3.2.60-1+deb7u3
ii  xen-system-amd64           4.1.4-3+deb7u2

xen-linux-system-3.2.0-4-amd64 recommends no packages.

xen-linux-system-3.2.0-4-amd64 suggests no packages.

-- no debconf information



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