When upgrading to version 4.0.x I noticed that when I unplug or plug my power linux needs a huge time to recognize the new power state. That time span can go up to over a minute. cat /sys/class/power_supply/BAT1/status hangs and won't print any output for this period. For example when I unplug power right before I suspend, on resuming the display stays black until the new power state is recognized. I just tested 3.14 and everything is fine there. I have the feeling that with each kernel release the system needs longer to detect the power state. With 3.19 I had approximately 5 seconds what was still acceptable for me. I have two other laptops and they do not have this issue. Please tell me what logs I should post. PS: Sorry for my bad English.
I have the same problem with this this Notebook.
Here my Systemconfiguration: System: Host: Manjaro Kernel: 4.1.2-1-MANJARO x86_64 (64 bit) Desktop: KDE Plasma 5.12.0 Distro: ManjaroLinux 0.8.13.1 Ascella Machine: System: LENOVO product: 20289 v: Lenovo IdeaPad U530 Touch Mobo: LENOVO model: Plum 5A v: 31900058STD Bios: LENOVO v: 7CCN62WW date: 11/13/2014 CPU: Dual core Intel Core i7-4500U (-HT-MCP-) speed/max: 2805/3000 MHz Graphics: Card-1: Intel Haswell-ULT Integrated Graphics Controller Card-2: NVIDIA GK208M [GeForce GT 730M] Display Server: X.Org 1.17.2 driver: intel Resolution: 1920x1080@60.06hz GLX Renderer: Mesa DRI Intel Haswell Mobile GLX Version: 3.0 Mesa 10.6.2 Network: Card-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller driver: r8168 Card-2: Intel Wireless 7260 driver: iwlwifi Card-3: Atmel Drives: HDD Total Size: 256.1GB (40.8% used) Info: Processes: 181 Uptime: 13:44 Memory: 2410.0/7912.0MB Client: Shell (bash) inxi: 2.2.25
I think this bug can be closed now. https://bugzilla.kernel.org/show_bug.cgi?id=100421 https://bugzilla.kernel.org/show_bug.cgi?id=97381