Description of problem: Placing the laptop in suspend, either by closing the lid or manually suspending the device, causes the device to not re-enable the backlight, making the integrated laptop screen useless. An external monitor does work as expected. Version-Release number of selected component (if applicable): The affected kernel is version 4.13.4-200.fc26.x86_64. Rolling back to version 4.12.14-300.fc26.x86_64 fixes this regression. How reproducible: Reproducible through use of a laptop with a backlight provided by the Intel backlight driver. Steps to Reproduce: 1. Using an applicable laptop running kernel 4.13.4-200.fc26.x86_64, suspend by closing the lid or manually suspending. 2. Open the lid or attempt to un-suspend the device otherwise. 3. The backlight will not be enabled, causing the device to be unusable without an external monitor, mouse and keyboard. Actual results: Device does not enable the backlight post-suspend. Expected results: Device enables backlight post-suspend as normal. Additional info: Output of `grep '.*' /sys/class/dmi/id/*_* 2> /dev/null`: /sys/class/dmi/id/bios_date:10/21/2016 /sys/class/dmi/id/bios_vendor:Insyde Corp. /sys/class/dmi/id/bios_version:V1.18 /sys/class/dmi/id/board_asset_tag:Type2 - Board Asset Tag /sys/class/dmi/id/board_name:Captain_SK /sys/class/dmi/id/board_vendor:Acer /sys/class/dmi/id/board_version:V1.18 /sys/class/dmi/id/chassis_asset_tag: /sys/class/dmi/id/chassis_type:10 /sys/class/dmi/id/chassis_vendor:Chassis Manufacturer /sys/class/dmi/id/chassis_version:Chassis Version /sys/class/dmi/id/product_family:KBL /sys/class/dmi/id/product_name:Aspire F5-573 /sys/class/dmi/id/product_version:V1.18 /sys/class/dmi/id/sys_vendor:Acer Output of `lspci`: 00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 02) 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 620 (rev 02) 00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21) 00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21) 00:15.0 Signal processing controller: Intel Corporation Sunrise Point-LP Serial IO I2C Controller #0 (rev 21) 00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21) 00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21) 00:1d.0 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 (rev f1) 00:1d.2 PCI bridge: Intel Corporation Device 9d1a (rev f1) 00:1d.3 PCI bridge: Intel Corporation Device 9d1b (rev f1) 00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21) 00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21) 00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21) 00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21) 02:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter (rev 31) 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTL8411B PCI Express Card Reader (rev 01) 03:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12) Output of `dmesg` (placed in external Gist because it is very long): https://gist.github.com/nhubbard/4d47ebf85710499cd80823949e0a4288 I will provide any additional information upon request.
We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. The kernel moves very fast so bugs may get fixed as part of a kernel update. Due to this, we are doing a mass bug update across all of the Fedora 26 kernel bugs. Fedora 26 has now been rebased to 4.15.4-200.fc26. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 27, and are still experiencing this issue, please change the version to Fedora 27. If you experience different issues, please open a new bug report for those.
This message is a reminder that Fedora 26 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 26. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '26'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 26 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.
Fedora 26 changed to end-of-life (EOL) status on 2018-05-29. Fedora 26 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.