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From: "Ludovic Courtès" <ludo@gnu.org>
To: Ben Sturmfels <ben@sturm.com.au>
Cc: Diego Nicola Barbato <dnbarbato@posteo.de>, 35408@debbugs.gnu.org
Subject: bug#35408: External monitor not working with GDM
Date: Fri, 26 Apr 2019 10:14:59 +0200	[thread overview]
Message-ID: <878svxnpx8.fsf@gnu.org> (raw)
In-Reply-To: <65eb86bd2ce13da6a6ea41360770aaa51fe1dea4.camel@sturm.com.au> (Ben Sturmfels's message of "Fri, 26 Apr 2019 10:42:58 +1000")

Hi Ben,

Ben Sturmfels <ben@sturm.com.au> skribis:

> [   448.627] (II) RADEON: Driver for ATI/AMD Radeon chipsets:

[...]

> [   448.630] (II) [KMS] drm report modesetting isn't supported.
> [   448.630] (EE) open /dev/dri/card0: No such file or directory
> [   448.630] (WW) Falling back to old probe method for modesetting
> [   448.630] (EE) open /dev/dri/card0: No such file or directory
> [   448.630] (II) Loading sub module "fbdevhw"
> [   448.630] (II) LoadModule: "fbdevhw"
> [   448.631] (II) Loading /gnu/store/xxpf6xz7prlwrvvl7sviaxmahsyavx1c-xorg-server-1.20.4/lib/xorg/modules/libfbdevhw.so
> [   448.631] (II) Module fbdevhw: vendor="X.Org Foundation"
> [   448.631] 	compiled for 1.20.4, module version = 0.0.2
> [   448.631] 	ABI class: X.Org Video Driver, version 24.0
> [   448.631] (EE) Unable to find a valid framebuffer device
> [   448.631] (WW) Falling back to old probe method for fbdev
> [   448.631] (II) Loading sub module "fbdevhw"
> [   448.631] (II) LoadModule: "fbdevhw"
> [   448.631] (II) Loading /gnu/store/xxpf6xz7prlwrvvl7sviaxmahsyavx1c-xorg-server-1.20.4/lib/xorg/modules/libfbdevhw.so
> [   448.631] (II) Module fbdevhw: vendor="X.Org Foundation"
> [   448.631] 	compiled for 1.20.4, module version = 0.0.2
> [   448.631] 	ABI class: X.Org Video Driver, version 24.0
> [   448.631] (EE) open /dev/fb0: No such file or directory
> [   448.631] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
> [   448.631] (EE) Screen 0 deleted because of no matching config section.
> [   448.631] (II) UnloadModule: "radeon"
> [   448.631] (EE) Screen 0 deleted because of no matching config section.
> [   448.631] (II) UnloadModule: "modesetting"
> [   448.631] (EE) Screen 0 deleted because of no matching config section.
> [   448.631] (II) UnloadModule: "fbdev"
> [   448.631] (II) UnloadSubModule: "fbdevhw"
> [   448.631] (II) Loading sub module "vbe"
> [   448.631] (II) LoadModule: "vbe"
> [   448.632] (II) Loading /gnu/store/xxpf6xz7prlwrvvl7sviaxmahsyavx1c-xorg-server-1.20.4/lib/xorg/modules/libvbe.so
> [   448.632] (II) Module vbe: vendor="X.Org Foundation"
> [   448.632] 	compiled for 1.20.4, module version = 1.1.0
> [   448.632] 	ABI class: X.Org Video Driver, version 24.0
> [   448.632] (II) Loading sub module "int10"
> [   448.632] (II) LoadModule: "int10"
> [   448.632] (II) Loading /gnu/store/xxpf6xz7prlwrvvl7sviaxmahsyavx1c-xorg-server-1.20.4/lib/xorg/modules/libint10.so
> [   448.632] (II) Module int10: vendor="X.Org Foundation"
> [   448.632] 	compiled for 1.20.4, module version = 1.0.0
> [   448.632] 	ABI class: X.Org Video Driver, version 24.0
> [   448.632] (II) VESA(0): initializing int10
> [   448.633] (EE) VESA(0): Cannot read int vect
> [   448.633] (II) UnloadModule: "vesa"
> [   448.633] (II) UnloadSubModule: "int10"
> [   448.633] (II) Unloading int10
> [   448.633] (II) UnloadSubModule: "vbe"
> [   448.633] (II) Unloading vbe
> [   448.633] (EE) Screen(s) found, but none have a usable configuration.
> [   448.633] (EE) 
> Fatal server error:
> [   448.633] (EE) no screens found(EE) 
> [   448.633] (EE) 
> Please consult the The X.Org Foundation support 
> 	 at http://wiki.x.org
>  for help. 
> [   448.633] (EE) Please also check the log file at "/var/lib/gdm/.local/share/xorg/Xorg.0.log" for additional information.

It looks like you have an AMD Radeon graphics card, is that right?  Did
you pass “modprobe.blacklist=radeon” on the kernel command line, or
something similar?

Apparently some of these AMD graphics cards are not quite supported by
free software, so that might be the issue here.

Thanks,
Ludo’.

  reply	other threads:[~2019-04-26  8:16 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-24  4:25 bug#35408: External monitor not working with GDM Ben Sturmfels
2019-04-25  9:08 ` Ludovic Courtès
2019-04-25 11:41   ` Ben Sturmfels
2019-04-25 12:16     ` Danny Milosavljevic
2019-04-25 12:53       ` Ben Sturmfels
2019-04-25 16:37       ` Ludovic Courtès
2019-04-26  1:12       ` Ben Sturmfels
2019-04-26  8:12         ` Ludovic Courtès
2019-04-25 22:13     ` Diego Nicola Barbato
2019-04-26  0:42       ` Ben Sturmfels
2019-04-26  8:14         ` Ludovic Courtès [this message]
2019-05-02  2:00           ` Ben Sturmfels
2019-05-02  8:01             ` Ben Sturmfels
2019-05-02 15:20               ` Ludovic Courtès
2019-05-08  2:50                 ` Ben Sturmfels
2020-06-11  4:01 ` Royce Strange

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