我正在使用 Ubuntu 16.10，除了音量键之外，所有功能键都不起作用或有 2 分钟延迟。另外，我正在使用 Thinkpad 11e。我在线检查了一下，这看起来像是内核问题。以下是更多信息：1：我当前的内核启动行（cat /proc/cmdline）：
BOOT_IMAGE=/boot/vmlinuz-4.8.0-26-generic.efi.signed root=UUID=dd0e072b-5b7c-4f42-96d0-df430d64a627 ro quiet splash acpi_backlight=vendor vt.handoff=7
2：有关我的显卡的信息（lspci -k | grep -iA2 VGA）：
00:02.0 VGA compatible controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 21) Subsystem: Lenovo Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller Kernel driver in use: i915
3:我已知的背光接口信息（for interface in /sys/class/backlight/*; do echo -e "\n $interface"; cat $interface/{brightness,max_brightness,actual_brightness}; done）：
/sys/class/backlight/intel_backlight
5454
5454
5454
/sys/class/backlight/thinkpad_screen
7
7
7
4：我已加载的内核模块列表（lsmod）：
> Module Size Used by ccm 20480 0
> rfcomm 77824 2 bnep 20480 2
> snd_hda_codec_hdmi 45056 1 snd_hda_codec_realtek 86016 1
> snd_hda_codec_generic 73728 1 snd_hda_codec_realtek intel_rapl
> 20480 0 intel_powerclamp 16384 0 coretemp 16384
> 0 arc4 16384 2 kvm 598016 0
> irqbypass 16384 1 kvm punit_atom_debug 16384 0
> crct10dif_pclmul 16384 0 crc32_pclmul 16384 0
> ghash_clmulni_intel 16384 0 nls_iso8859_1 16384 1
> aesni_intel 167936 0 iwlmvm 360448 0
> aes_x86_64 20480 1 aesni_intel lrw
> 16384 1 aesni_intel glue_helper 16384 1 aesni_intel
> ablk_helper 16384 1 aesni_intel cryptd
> 24576 3 ablk_helper,ghash_clmulni_intel,aesni_intel mac80211
> 757760 1 iwlmvm intel_cstate 16384 0 input_leds
> 16384 0 iwlwifi 229376 1 iwlmvm joydev
> 20480 0 serio_raw 16384 0 cfg80211 581632
> 3 iwlmvm,iwlwifi,mac80211 snd_soc_rt5670 126976 0 nxp_nci_i2c
> 16384 0 nxp_nci 16384 1 nxp_nci_i2c snd_soc_rl6231
> 16384 1 snd_soc_rt5670 nci 69632 2
> nxp_nci,nxp_nci_i2c nfc 110592 2 nxp_nci,nci
> lpc_ich 24576 0 uvcvideo 90112 0
> videobuf2_vmalloc 16384 1 uvcvideo videobuf2_memops 16384
> 1 videobuf2_vmalloc videobuf2_v4l2 24576 1 uvcvideo
> videobuf2_core 40960 2 uvcvideo,videobuf2_v4l2 snd_hda_intel
> 36864 3 videodev 180224 3
> uvcvideo,videobuf2_core,videobuf2_v4l2 snd_hda_codec 135168 4
> snd_hda_intel,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek
> media 40960 2 uvcvideo,videodev snd_hda_core
> 86016 5
> snd_hda_intel,snd_hda_codec,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek
> shpchp 36864 0 mei_txe 20480 0
> snd_hwdep 16384 1 snd_hda_codec btusb
> 45056 0 mei 102400 1 mei_txe btrtl
> 16384 1 btusb snd_intel_sst_acpi 16384 0 snd_intel_sst_core
> 77824 1 snd_intel_sst_acpi snd_soc_sst_mfld_platform 90112 1
> snd_intel_sst_core snd_soc_sst_match 16384 1 snd_intel_sst_acpi
> snd_soc_core 233472 2
> snd_soc_rt5670,snd_soc_sst_mfld_platform snd_compress 20480
> 1 snd_soc_core ac97_bus 16384 1 snd_soc_core
> snd_pcm_dmaengine 16384 1 snd_soc_core snd_pcm
> 110592 8
> snd_hda_intel,snd_hda_codec,snd_soc_rt5670,snd_pcm_dmaengine,snd_hda_core,snd_hda_codec_hdmi,snd_soc_sst_mfld_platform,snd_soc_core
> snd_seq_midi 16384 0 snd_seq_midi_event 16384 1
> snd_seq_midi snd_rawmidi 32768 1 snd_seq_midi
> thinkpad_acpi 94208 1 nvram 16384 1
> thinkpad_acpi snd_seq 69632 2
> snd_seq_midi_event,snd_seq_midi tpm_infineon 20480 0
> snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi
> hci_uart 94208 0 snd_timer 32768 2
> snd_seq,snd_pcm btbcm 16384 2 hci_uart,btusb btqca
> 16384 1 hci_uart dw_dmac 16384 0 btintel
> 16384 2 hci_uart,btusb dw_dmac_core 24576 1 dw_dmac snd
> 86016 21
> snd_compress,snd_hda_intel,snd_hwdep,snd_seq,snd_hda_codec,snd_timer,thinkpad_acpi,snd_rawmidi,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_seq_device,snd_soc_sst_mfld_platform,snd_hda_codec_realtek,snd_soc_core,snd_pcm
> bluetooth 552960 33
> btrtl,hci_uart,btintel,btqca,bnep,btbcm,rfcomm,btusb rfkill_gpio
> 16384 0 i2c_designware_platform 16384 0 i2c_designware_core
> 20480 1 i2c_designware_platform pwm_lpss_platform 16384 0
> soundcore 16384 1 snd pwm_lpss 16384 1
> pwm_lpss_platform spi_pxa2xx_platform 24576 0 8250_dw
> 16384 0 soc_button_array 16384 0 mac_hid 16384
> 0 parport_pc 32768 0 ppdev 20480 0 lp
> 20480 0 parport 49152 3 lp,parport_pc,ppdev ip_tables
> 28672 0 x_tables 36864 1 ip_tables autofs4
> 40960 2 i915 1314816 5 i2c_algo_bit 16384
> 1 i915 drm_kms_helper 167936 1 i915 syscopyarea
> 16384 1 drm_kms_helper sysfillrect 16384 1 drm_kms_helper
> sysimgblt 16384 1 drm_kms_helper r8169
> 81920 0 fb_sys_fops 16384 1 drm_kms_helper psmouse
> 131072 0 ahci 36864 3 drm 368640
> 6 i915,drm_kms_helper libahci 32768 1 ahci mii
> 16384 1 r8169 wmi 16384 0 video
> 40960 2 thinkpad_acpi,i915 i2c_hid 20480 0 dwc3
> 102400 0 hid 118784 1 i2c_hid udc_core
> 53248 1 dwc3 sdhci_acpi 16384 0 ulpi
> 16384 1 dwc3 fjes 28672 0 sdhci
> 45056 1 sdhci_acpi pinctrl_cherryview 32768 0
5：我的 /var/log/Xorg.0.log 文件：
http://paste.ubuntu.com/23443256/
我曾尝试强制我的笔记本电脑使用英特尔背光设置（/usr/share/X11/xorg.conf.d/20-intel.conf），但仍然不起作用：
Section "Device"
Identifier "card0"
Driver "intel"
Option "Backlight" "Intel_backlight"
BusID "PCI:0:2:0"
EndSection