I just bought an Dell XPS 13 2015 (9343) whose Linux (installed Ubuntu 14.04 LTS (Trusty Tahr)) support seems to be quite disappointing at the moment. Before spending money on new equipment I would like to be sure about some functions.
- The XPS has an Displayport 1.2 which should support Multi Stream Transport (MST). Ubuntu in general does as well. The question is now, if Ubuntu supports it in combination with the XPS' Intel HD5500? Any experiences here? Great would be Daisychaining as well.
It would be great to here your experiences and tips with this or similar models.
EDIT: Here is the lshw
output:
id: display
Beschreibung: VGA compatible controller
Produkt: Broadwell-U Integrated Graphics
Hersteller: Intel Corporation
Physische ID: 2
Bus-Informationen:
pci@0000:00:02.0
Version: 09
Breite: 64 bits
Takt: 33MHz
Fähigkeiten: msi pm vga_controller bus_master cap_list rom
Konfiguration:
driver = i915
latency = 0
Ressourcen:
irq : 64
memory : f6000000-f6ffffff
memory : e0000000-efffffff
ioport : f000(Größe=64)
Here is the modinfo i915
output:
filename: /lib/modules/3.16.0-30-generic/kernel/drivers/gpu/drm/i915/i915.ko
license: GPL and additional rights
description: Intel Graphics
author: Tungsten Graphics, Inc.
srcversion: 3E1094D0573592892C2C238
alias: pci:v00008086d000022B3sv*sd*bc03sc*i*
... many more alias ...
depends: drm_kms_helper,drm,video,i2c-algo-bit
intree: Y
vermagic: 3.16.0-30-generic SMP mod_unload modversions
signer: Magrathea: Glacier signing key
sig_key: 7B:E2:A7:20:0F:17:F0:0C:A0:11:F7:0E:5A:87:4C:37:E3:E0:F6:BE
sig_hashalgo: sha512
parm: modeset:Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, 1=on, -1=force vga console preference [default]) (int)
parm: panel_ignore_lid:Override lid status (0=autodetect, 1=autodetect disabled [default], -1=force lid closed, -2=force lid open) (int)
parm: powersave:Enable powersavings, fbc, downclocking, etc. (default: true) (int)
parm: semaphores:Use semaphores for inter-ring sync (default: -1 (use per-chip defaults)) (int)
parm: enable_rc6:Enable power-saving render C-state 6. Different stages can be selected via bitmask values (0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. default: -1 (use per-chip default) (int)
parm: enable_fbc:Enable frame buffer compression for power savings (default: -1 (use per-chip default)) (int)
parm: lvds_downclock:Use panel (LVDS/eDP) downclocking for power savings (default: false) (int)
parm: lvds_channel_mode:Specify LVDS channel mode (0=probe BIOS [default], 1=single-channel, 2=dual-channel) (int)
parm: lvds_use_ssc:Use Spread Spectrum Clock with panels [LVDS/eDP] (default: auto from VBT) (int)
parm: vbt_sdvo_panel_type:Override/Ignore selection of SDVO panel mode in the VBT (-2=ignore, -1=auto [default], index in VBT BIOS table) (int)
parm: reset:Attempt GPU resets (default: true) (bool)
parm: enable_hangcheck:Periodically check GPU activity for detecting hangs. WARNING: Disabling this can cause system wide hangs. (default: true) (bool)
parm: enable_ppgtt:Override PPGTT usage. (-1=auto [default], 0=disabled, 1=aliasing, 2=full) (int)
parm: enable_psr:Enable PSR (default: false) (int)
parm: preliminary_hw_support:Enable preliminary hardware support. (int)
parm: disable_power_well:Disable the power well when possible (default: true) (int)
parm: enable_ips:Enable IPS (default: true) (int)
parm: fastboot:Try to skip unnecessary mode sets at boot time (default: false) (bool)
parm: prefault_disable:Disable page prefaulting for pread/pwrite/reloc (default:false). For developers only. (bool)
parm: invert_brightness:Invert backlight brightness (-1 force normal, 0 machine defaults, 1 force inversion), please report PCI device ID, subsystem vendor and subsystem device ID to dri-devel@lists.freedesktop.org, if your machine needs it. It will then be included in an upcoming module version. (int)
parm: disable_display:Disable display (default: false) (bool)
parm: disable_vtd_wa:Disable all VT-d workarounds (default: false) (bool)
parm: enable_cmd_parser:Enable command parsing (1=enabled [default], 0=disabled) (int)
lshw
from both models I can't comment on what is technically different between the 2 XPS 13's you mention. – Elder Geek Mar 04 '15 at 16:45