Public bug reported:
I was running Ubuntu 16.04 and I used xbacklight frequently. Upon
upgrading to 17.04 release candidate as of 13th of April, xbacklight
stopped to work.
$ xbacklight -set 10
No outputs have backlight property
# lshw
foobar
description: Laptop
product: Latitude 3330 (Latitude 3330)
vendor: Dell Inc.
version: 01
serial: 78J74Z1
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 smp vsyscall32
configuration: boot=normal chassis=laptop sku=Latitude 3330
uuid=44454C4C-3800-104A-8037-B7C04F345A31
*-core
description: Motherboard
product: 07JYK1
vendor: Dell Inc.
physical id: 0
version: A00
serial: /78J74Z1/CN7620643T004K/
*-firmware
description: BIOS
vendor: Dell Inc.
physical id: 0
version: A06
date: 05/20/2015
size: 64KiB
capacity: 13MiB
capabilities: pci pnp upgrade shadowing cdboot bootselect socketedrom
edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard
int14serial int17printer acpi usb smartbattery biosbootspecification netboot
uefi
*-cpu
description: CPU
product: Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz
vendor: Intel Corp.
physical id: 50
bus info: cpu@0
version: Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz
slot: SOCKET 0
size: 1256MHz
capacity: 1800MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce
cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss
ht tm pbe syscall nx rdtscp constant_tsc arch_perfmon pebs bts rep_good nopl
xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est
tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer
xsave avx f16c lahf_lm epb tpr_shadow vnmi flexpriority ept vpid fsgsbase smep
erms xsaveopt dtherm arat pln pts cpufreq
configuration: cores=2 enabledcores=2 threads=4
*-cache:0
description: L2 cache
physical id: 40
slot: CPU Internal L2
size: 512KiB
capacity: 512KiB
capabilities: internal write-through unified
configuration: level=2
*-cache:1
description: L1 cache
physical id: 41
slot: CPU Internal L1
size: 128KiB
capacity: 128KiB
capabilities: internal write-through data
configuration: level=1
*-cache:2
description: L3 cache
physical id: 42
slot: CPU Internal L3
size: 3MiB
capacity: 3MiB
capabilities: internal write-back unified
configuration: level=3
*-memory
description: System Memory
physical id: 43
slot: System board or motherboard
size: 4GiB
*-bank:0
description: DIMM [empty]
product: [Empty]
vendor: [Empty]
physical id: 0
serial: [Empty]
slot: DIMM A
*-bank:1
description: SODIMM DDR3 Synchronous 1600 MHz (0,6 ns)
product: HMT451S6AFR8A-PB
vendor: Hynix/Hyundai
physical id: 1
serial: 01434B8B
slot: DIMM B
size: 4GiB
width: 64 bits
clock: 1600MHz (0.6ns)
*-pci
description: Host bridge
product: 3rd Gen Core processor DRAM Controller
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 09
width: 32 bits
clock: 33MHz
configuration: driver=ivb_uncore
resources: irq:0
*-display
description: VGA compatible controller
product: 3rd Gen Core processor Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:27 memory:f6c00000-f6ffffff
memory:e0000000-efffffff ioport:f000(size=64) memory:c0000-dffff
*-usb:0
description: USB controller
product: 7 Series/C210 Series Chipset Family USB xHCI Host
Controller
vendor: Intel Corporation
physical id: 14
bus info: pci@0000:00:14.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi xhci bus_master cap_list
configuration: driver=xhci_hcd latency=0
resources: irq:24 memory:f7c20000-f7c2ffff
*-usbhost:0
product: xHCI Host Controller
vendor: Linux 4.10.0-19-lowlatency xhci-hcd
physical id: 0
bus info: usb@3
logical name: usb3
version: 4.10
capabilities: usb-2.00
configuration: driver=hub slots=4 speed=480Mbit/s
*-usbhost:1
product: xHCI Host Controller
vendor: Linux 4.10.0-19-lowlatency xhci-hcd
physical id: 1
bus info: usb@4
logical name: usb4
version: 4.10
capabilities: usb-3.00
configuration: driver=hub slots=4 speed=5000Mbit/s
*-communication
description: Communication controller
product: 7 Series/C216 Chipset Family MEI Controller #1
vendor: Intel Corporation
physical id: 16
bus info: pci@0000:00:16.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=mei_me latency=0
resources: irq:28 memory:f7c3c000-f7c3c00f
*-network
description: Ethernet interface
product: 82579LM Gigabit Network Connection
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: eno1
version: 04
serial: e0:db:55:cb:8c:6a
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt
10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e
driverversion=3.2.6-k firmware=0.15-4 latency=0 link=no multicast=yes
port=twisted pair
resources: irq:26 memory:f7c00000-f7c1ffff
memory:f7c39000-f7c39fff ioport:f080(size=32)
*-usb:1
description: USB controller
product: 7 Series/C216 Chipset Family USB Enhanced Host Controller
#2
vendor: Intel Corporation
physical id: 1a
bus info: pci@0000:00:1a.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:16 memory:f7c38000-f7c383ff
*-usbhost
product: EHCI Host Controller
vendor: Linux 4.10.0-19-lowlatency ehci_hcd
physical id: 1
bus info: usb@1
logical name: usb1
version: 4.10
capabilities: usb-2.00
configuration: driver=hub slots=2 speed=480Mbit/s
*-usb
description: USB hub
product: Integrated Rate Matching Hub
vendor: Intel Corp.
physical id: 1
bus info: usb@1:1
version: 0.00
capabilities: usb-2.00
configuration: driver=hub slots=6 speed=480Mbit/s
*-usb
description: Video
product: Integrated_Webcam_HD
vendor: CNFCH41k104010020100
physical id: 5
bus info: usb@1:1.5
version: 37.04
serial: 0x0001
capabilities: usb-2.00
configuration: driver=uvcvideo maxpower=500mA
speed=480Mbit/s
*-multimedia
description: Audio device
product: 7 Series/C216 Chipset Family High Definition Audio
Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:29 memory:f7c30000-f7c33fff
*-pci:0
description: PCI bridge
product: 7 Series/C216 Chipset Family PCI Express Root Port 1
vendor: Intel Corporation
physical id: 1c
bus info: pci@0000:00:1c.0
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master
cap_list
configuration: driver=pcieport
resources: irq:16
*-pci:1
description: PCI bridge
product: 7 Series/C210 Series Chipset Family PCI Express Root Port
2
vendor: Intel Corporation
physical id: 1c.1
bus info: pci@0000:00:1c.1
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master
cap_list
configuration: driver=pcieport
resources: irq:17 memory:f7b00000-f7bfffff
*-network
description: Wireless interface
product: Centrino Advanced-N 6235
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 24
serial: 4a:12:c4:3c:68:d7
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet
physical wireless
configuration: broadcast=yes driver=iwlwifi
driverversion=4.10.0-19-lowlatency firmware=18.168.6.1 ip=192.168.1.21
latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:30 memory:f7b00000-f7b01fff
*-pci:2
description: PCI bridge
product: 7 Series/C216 Chipset Family PCI Express Root Port 4
vendor: Intel Corporation
physical id: 1c.3
bus info: pci@0000:00:1c.3
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master
cap_list
configuration: driver=pcieport
resources: irq:19 ioport:e000(size=4096) memory:f7000000-f79fffff
ioport:f0000000(size=10485760)
*-pci:3
description: PCI bridge
product: 7 Series/C210 Series Chipset Family PCI Express Root Port
6
vendor: Intel Corporation
physical id: 1c.5
bus info: pci@0000:00:1c.5
version: c4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master
cap_list
configuration: driver=pcieport
resources: irq:17 memory:f7a00000-f7afffff
*-generic
description: SD Host controller
product: OZ600FJ0/OZ900FJ0/OZ600FJS SD/MMC Card Reader
Controller
vendor: O2 Micro, Inc.
physical id: 0
bus info: pci@0000:07:00.0
version: 05
width: 32 bits
clock: 33MHz
capabilities: pm pciexpress bus_master cap_list
configuration: driver=sdhci-pci latency=0
resources: irq:17 memory:f7a02000-f7a021ff
*-usb:2
description: USB controller
product: 7 Series/C216 Chipset Family USB Enhanced Host Controller
#1
vendor: Intel Corporation
physical id: 1d
bus info: pci@0000:00:1d.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:21 memory:f7c37000-f7c373ff
*-usbhost
product: EHCI Host Controller
vendor: Linux 4.10.0-19-lowlatency ehci_hcd
physical id: 1
bus info: usb@2
logical name: usb2
version: 4.10
capabilities: usb-2.00
configuration: driver=hub slots=2 speed=480Mbit/s
*-usb
description: USB hub
product: Integrated Rate Matching Hub
vendor: Intel Corp.
physical id: 1
bus info: usb@2:1
version: 0.00
capabilities: usb-2.00
configuration: driver=hub slots=8 speed=480Mbit/s
*-usb
description: Bluetooth wireless interface
vendor: Intel Corp.
physical id: 5
bus info: usb@2:1.5
version: 78.69
capabilities: bluetooth usb-2.00
configuration: driver=btusb speed=12Mbit/s
*-isa
description: ISA bridge
product: HM77 Express Chipset LPC Controller
vendor: Intel Corporation
physical id: 1f
bus info: pci@0000:00:1f.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: isa bus_master cap_list
configuration: driver=lpc_ich latency=0
resources: irq:0
*-storage
description: SATA controller
product: 7 Series Chipset Family 6-port SATA Controller [AHCI mode]
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 04
width: 32 bits
clock: 66MHz
capabilities: storage msi pm ahci_1.0 bus_master cap_list
configuration: driver=ahci latency=0
resources: irq:25 ioport:f0d0(size=8) ioport:f0c0(size=4)
ioport:f0b0(size=8) ioport:f0a0(size=4) ioport:f060(size=32)
memory:f7c36000-f7c367ff
*-serial UNCLAIMED
description: SMBus
product: 7 Series/C216 Chipset Family SMBus Controller
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 04
width: 64 bits
clock: 33MHz
configuration: latency=0
resources: memory:f7c35000-f7c350ff ioport:f040(size=32)
*-scsi
physical id: 1
logical name: scsi0
capabilities: emulated
*-disk
description: ATA Disk
product: ST500LM000-1EJ16
vendor: Seagate
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: DEM7
serial: W372FS25
size: 465GiB (500GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 logicalsectorsize=512 sectorsize=4096
signature=2aa07092
*-volume
description: Solaris partition
physical id: 1
bus info: scsi@0:0.0.0,1
logical name: /dev/sda1
capacity: 465GiB
capabilities: primary bootable
*-battery
product: DELL M0P7P31
vendor: SMP
physical id: 1
version: 03/24/2016
serial: 0038
slot: Sys. Battery Bay
capacity: 64380mWh
configuration: voltage=11,1V
*-power UNCLAIMED
description: To Be Filled By O.E.M.
product: To Be Filled By O.E.M.
vendor: To Be Filled By O.E.M.
physical id: 2
version: To Be Filled By O.E.M.
serial: To Be Filled By O.E.M.
capacity: 65mWh
*-network:0
description: Ethernet interface
physical id: 3
logical name: virbr0
serial: 52:54:00:ac:67:b9
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3
firmware=N/A ip=192.168.122.1 link=no multicast=yes
*-network:1 DISABLED
description: Ethernet interface
physical id: 4
logical name: virbr0-nic
serial: 52:54:00:ac:67:b9
size: 10Mbit/s
capabilities: ethernet physical
configuration: autonegotiation=off broadcast=yes driver=tun
driverversion=1.6 duplex=full link=no multicast=yes port=twisted pair
speed=10Mbit/s
** Affects: xbacklight (Ubuntu)
Importance: Undecided
Status: New
** Tags: zeisty
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https://bugs.launchpad.net/bugs/1682559
Title:
Regression for xbacklight: No outputs have backlight property
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https://bugs.launchpad.net/ubuntu/+source/xbacklight/+bug/1682559/+subscriptions
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