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Description of problem: After update of kernel from 4.6.7-300.fc24.x86_64 to 4.7.2-201.fc24.x86_64 brightness control stopped working. Brightness is still on maximum. By pressing Fn-F8 and Fn-F9 I can move indicator but not lower brightness. Version-Release number of selected component (if applicable): kernel-4.6.7-300.fc24.x86_64 - works ok kernel-4.7.2-201.fc24.x86_64 - stopped working How reproducible: Always. Steps to Reproduce: 1. install kernel kernel-4.7.2-201.fc24.x86_64 2. boot with this kernel 3. Fn-F8 and Fn-F9 only move indicator, but not set brightness Actual results: Brightness not working with kernel 4.7.2-201.fc24.x86_64 Expected results: Brightness setting works. Additional info: Notebook Maxdata with Quad core Intel Core i7-3612QM CPU and Intel HD Graphics 4000. Fedora 24 with Cinnamon installed. [root@kriznb ~]# inxi -c3 -F System: Host: kriznb.snt-is.com Kernel: 3.13.5-200.fc20.x86_64 x86_64 (64 bit) Desktop: Cinnamon 2.0.14 Distro: Fedora release 20 (Heisenbug) Machine: Mobo: W251CEW model: W251CEW Bios: American Megatrends version: 4.6.5 date: 11/08/2012 CPU: Quad core Intel Core i7-3612QM CPU (-HT-MCP-) cache: 6144 KB flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) Clock Speeds: 1: 2881.183 MHz 2: 2535.996 MHz 3: 2447.238 MHz 4: 2604.738 MHz 5: 2967.972 MHz 6: 2363.566 MHz 7: 1200.035 MHz 8: 1597.886 MHz Graphics: Card: Intel 3rd Gen Core processor Graphics Controller X.org: 1.14.4 drivers: intel (unloaded: fbdev,vesa) tty size: 190x49 Advanced Data: N/A for root Audio: Card: Intel 7 Series/C210 Series Family High Definition Audio Controller driver: snd_hda_intel Sound: Advanced Linux Sound Architecture ver: k3.13.5-200.fc20.x86_64 Network: Card-1: Intel 82579V Gigabit Network Connection driver: e1000e IF: em1 state: up speed: 100 Mbps duplex: full mac: 00:90:f5:dc:93:e7 Card-2: Realtek RTL8723AE PCIe Wireless Network Adapter driver: rtl8723ae IF: wlp1s0 state: down mac: e0:91:53:83:35:db Drives: HDD Total Size: 750.2GB (40.5% used) 1: id: /dev/sda model: TOSHIBA_MQ01ABD0 size: 750.2GB Partition: ID: / size: 30G used: 20G (70%) fs: ext4 ID: /var size: 4.9G used: 2.6G (55%) fs: ext4 ID: /boot size: 243M used: 118M (53%) fs: ext4 ID: swap-1 size: 8.59GB used: 0.00GB (0%) fs: swap RAID: No RAID devices detected - /proc/mdstat and md_mod kernel raid module present Sensors: System Temperatures: cpu: 58.0C mobo: N/A Fan Speeds (in rpm): cpu: N/A
After update to kernel-4.7.3-200.fc24.x86_64 there is no change - brightness still not working.
Sorry for that "little" outdated system report. I only wanted paste information about my HW, so I copied it from my notes, and didn't realize, that there is a lot of info about SW too. There is actual version: [root@kriznb ~]# inxi -c3 -F System: Host: kriznb.snt-is.com Kernel: 4.7.3-200.fc24.x86_64 x86_64 (64 bit) Desktop: Cinnamon 3.0.7 Distro: Fedora release 24 (Twenty Four) Machine: System: W251CEW (portable) product: W251CEW Mobo: W251CEW model: W251CEW Bios: American Megatrends v: 4.6.5 date: 11/08/2012 Battery BAT0: charge: 61.6 Wh 100.0% condition: 61.6/56.0 Wh (110%) CPU: Quad core Intel Core i7-3612QM (-HT-MCP-) cache: 6144 KB clock speeds: max: 3100 MHz 1: 1249 MHz 2: 1223 MHz 3: 1397 MHz 4: 1225 MHz 5: 1392 MHz 6: 1222 MHz 7: 1275 MHz 8: 1207 MHz Graphics: Card: Intel 3rd Gen Core processor Graphics Controller Display Server: X.org 1.18.4 drivers: intel (unloaded: fbdev,vesa) tty size: 146x35 Advanced Data: N/A for root Audio: Card Intel 7 Series/C210 Series Family High Definition Audio Controller driver: snd_hda_intel Sound: Advanced Linux Sound Architecture v: k4.7.3-200.fc24.x86_64 Network: Card-1: Intel 82579V Gigabit Network Connection driver: e1000e IF: enp0s25 state: up speed: 100 Mbps duplex: full mac: 00:90:f5:dc:93:e7 Card-2: Realtek RTL8723AE PCIe Wireless Network Adapter driver: rtl8723ae IF: wlp1s0 state: down mac: e0:91:53:83:35:db Drives: HDD Total Size: 750.2GB (68.1% used) ID-1: /dev/sda model: TOSHIBA_MQ01ABD0 size: 750.2GB Partition: ID-1: / size: 35G used: 32G (95%) fs: ext4 dev: /dev/dm-1 ID-2: /var size: 12G used: 1.9G (17%) fs: ext4 dev: /dev/dm-2 ID-3: /boot size: 243M used: 119M (53%) fs: ext4 dev: /dev/sda4 ID-4: swap-1 size: 8.59GB used: 0.00GB (0%) fs: swap dev: /dev/dm-0 RAID: No RAID devices: /proc/mdstat, md_mod kernel module present Sensors: System Temperatures: cpu: 54.0C mobo: N/A Fan Speeds (in rpm): cpu: N/A Info: Processes: 257 Uptime: 6 min Memory: 909.8/7863.0MB Client: Shell (bash) inxi: 2.3.0
After upgrade to kernel-4.7.4-200.fc24.x86_64 - nothing change. Still keys Fn-F8 and Fn-F9 shift onscreen indicator but NOT change brightness.
SOLVED - After upgrade to kernel-4.7.5-200.fc24.x86_64 - it is WORKING OK.