Sempre que eu quiser iniciar um segundo X-Server (um está sendo executado no display: 0, eu iniciei o segundo com X :1 , como root, mas como usuário normal ele não funciona também) ele não será iniciado . A mensagem de erro relevante parece ser (EE) intel(0): [drm] failed to set drm interface version: Permission denied [13]. e (EE) intel(0): Failed to claim DRM device. (o (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied também existe para o Xorg em execução com êxito: 0).
Alguém sabe uma maneira de iniciar um segundo Xserver?
Estou usando o driver Intel, do lado do kernel é i915 com modesetting.
O Xorg.log relevante está anexado.
[ 6646.990]
X.Org X Server 1.17.2
Release Date: 2015-06-16
[ 6646.996] X Protocol Version 11, Revision 0
[ 6646.998] Build Operating System: Linux 4.0.4-2-ARCH x86_64
[ 6647.004] Current Operating System: Linux felics-tablet 3.18.21-ck-bfs-tuxice-uksm-bfq-gccopt-phcintel #6 PREEMPT Tue Sep 15 20:07:15 CEST 2015 x86_64
[ 6647.005] Kernel command line: root=/dev/sda5 ro kdb=off loglevel=9 pcie_aspm=force slub_debug=- vt.default_utf8=1 fbcon=font:VGA8x8 acpi_backlight=vendor intel_iommu=off vga=6 resume=/dev/sda9
[ 6647.012] Build Date: 30 June 2015 09:00:12PM
[ 6647.014]
[ 6647.016] Current version of pixman: 0.32.6
[ 6647.021] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 6647.021] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 6647.032] (==) Log file: "/var/log/Xorg.1.log", Time: Thu Sep 17 11:41:35 2015
[ 6647.035] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 6647.037] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 6647.038] (==) No Layout section. Using the first Screen section.
[ 6647.038] (==) No screen section available. Using defaults.
[ 6647.038] (**) |-->Screen "Default Screen Section" (0)
[ 6647.038] (**) | |-->Monitor ""
[ 6647.039] (==) No device specified for screen "Default Screen Section".
Using the first device section listed.
[ 6647.039] (**) | |-->Device "Device0"
[ 6647.039] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 6647.039] (**) Option "AutoAddDevices" "true"
[ 6647.039] (**) Automatically adding devices
[ 6647.039] (==) Automatically enabling devices
[ 6647.039] (==) Automatically adding GPU devices
[ 6647.039] (**) FontPath set to:
/usr/share/fonts/local/,
/usr/share/fonts/misc/,
/usr/share/fonts/TTF/,
/usr/share/fonts/OTF/,
/usr/share/fonts/Type1/,
/usr/share/fonts/100dpi/,
/usr/share/fonts/75dpi/
[ 6647.039] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 6647.039] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 6647.039] (II) Loader magic: 0x816d60
[ 6647.039] (II) Module ABI versions:
[ 6647.039] X.Org ANSI C Emulation: 0.4
[ 6647.039] X.Org Video Driver: 19.0
[ 6647.039] X.Org XInput driver : 21.1
[ 6647.039] X.Org Server Extension : 9.0
[ 6647.042] (EE) systemd-logind: failed to get session: The name org.freedesktop.login1 was not provided by any .service files
[ 6647.043] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 6647.043] (EE) /dev/dri/card0: failed to set DRM interface version 1.4: Permission denied
[ 6647.480] (--) PCI:*(0:0:2:0) 8086:2a42:17aa:20e4 rev 7, Mem @ 0xf2000000/4194304, 0xd0000000/268435456, I/O @ 0x00001800/8
[ 6647.481] (--) PCI: (0:0:2:1) 8086:2a43:17aa:20e4 rev 7, Mem @ 0xf2400000/1048576
[ 6647.481] (II) Open ACPI successful (/var/run/acpid.socket)
[ 6647.481] (II) "glx" will be loaded. This was enabled by default and also specified in the config file.
[ 6647.481] (II) LoadModule: "dri"
[ 6647.481] (II) Module "dri" already built-in
[ 6647.481] (II) LoadModule: "glx"
[ 6647.482] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 6647.485] (II) Module glx: vendor="X.Org Foundation"
[ 6647.486] compiled for 1.17.2, module version = 1.0.0
[ 6647.486] ABI class: X.Org Server Extension, version 9.0
[ 6647.486] (==) AIGLX enabled
[ 6647.486] (II) LoadModule: "extmod"
[ 6647.486] (II) Module "extmod" already built-in
[ 6647.486] (II) LoadModule: "intel"
[ 6647.486] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[ 6647.486] (II) Module intel: vendor="X.Org Foundation"
[ 6647.486] compiled for 1.17.2, module version = 2.99.917
[ 6647.486] Module class: X.Org Video Driver
[ 6647.486] ABI class: X.Org Video Driver, version 19.0
[ 6647.486] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
[ 6647.487] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000
[ 6647.487] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100
[ 6647.487] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200, 6200, P6300
[ 6647.487] (--) using VT number 14
[ 6647.499] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20140905
[ 6647.499] (II) intel(0): SNA compiled from 2.99.917-364-gb24e758
[ 6647.500] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
[ 6649.679] (EE) intel(0): [drm] failed to set drm interface version: Permission denied [13].
[ 6649.679] (II) intel(0): [drm] Contents of '/sys/kernel/debug/dri/0/clients':
[ 6649.679] (II) intel(0): [drm] command pid dev master a uid magic
[ 6649.679] (II) intel(0): [drm] Xorg 16216 0 y y 1001 0
[ 6649.679] (II) intel(0): [drm] fuzzy-windows 16243 0 n y 1001 10
[ 6649.679] (II) intel(0): [drm] Xorg 17590 0 n y 0 0
[ 6649.679] (EE) intel(0): Failed to claim DRM device.
[ 6649.679] (II) UnloadModule: "intel"
[ 6649.679] (EE) Screen(s) found, but none have a usable configuration.
[ 6649.679] (EE)
Fatal server error:
[ 6649.679] (EE) no screens found(EE)
[ 6649.679] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 6649.680] (EE) Please also check the log file at "/var/log/Xorg.1.log" for additional information.
[ 6649.680] (EE)
[ 6649.697] (EE) Server terminated with error (1). Closing log file.
... E a solução é a seguinte:
Os outros servidores X precisam ser executados com um driver diferente. fbdev funciona. Antes de iniciar o segundo servidor, edite o arquivo de configuração do Xorg (ou automatize as coisas, re-ligando os arquivos de configuração e inicializando o X com um comando) para usar o driver de vídeo fbdev.