Bug 172251
| Summary: | Display Turns Off Permanently On Suspend - Intel GFX | ||
|---|---|---|---|
| Product: | ACPI | Reporter: | Steven Stewart-Gallus (sstewartgallus00) |
| Component: | Power-Video | Assignee: | Zhang Rui (rui.zhang) |
| Status: | CLOSED INSUFFICIENT_DATA | ||
| Severity: | normal | CC: | lenb, rui.zhang |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 4.7.4 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | My Hardware Configuration | ||
Please try the sysfs interface to control backlight and report if it behaves differently than using xbacklight: /sys/class/backlight/*/brightness Changing the brightness to zero using the sysfs interface does not turn off the display (you can still very slightly see the GUI on the laptop screen) and the brightness can be set up and down again (using the sysfs interface) (bypassing my desktop stack and using sysf directly seems to screw with the desktop and make it stop working.) Is there a sysfs interface way to actually turn off the screen and not just the backlight? NVM. This seems to be just a problem with the desktop stack where sometimes it can get into a state where it can't control the brightness. As backlight sysfs I/F works, the problem you have sounds like a graphics issue to me. Please file a bug report at https://bugs.freedesktop.org/ instead. So, I didn't make this clear but this is actually two problems that I originally thought were one. The first one is with the backlight and the second one is with the suspend and resume not working. When I suspend and the system resumes the display is completely off (not just the backlight.) (In reply to Steven Stewart-Gallus from comment #5) > So, I didn't make this clear but this is actually two problems that I > originally thought were one. The first one is with the backlight and the > second one is with the suspend and resume not working. When I suspend and > the system resumes the display is completely off (not just the backlight.) is the system still alive after resuming? if yes, this still sounds like a graphics issue to me. hmmm, bug closed as there is no response from the bug reporter. Please feel free to 1. reopen it if the system is dead after resume 2. file a bug report at freedesktop if the system is still alive, but with a black screen. |
Created attachment 239211 [details] My Hardware Configuration When I use xbacklight to set the brightness to zero the display can't be turned on again until I reboot. The same problem also happens sometimes when the computer suspends.