[Touch-packages] [Bug 1821882] Re: Screen is very dark and brightness cannot be adjusted
Is this a regression from older releases? when you say that disabling switchable graphics makes it use nvidia, I'd doubt that.. it should use intel then? ** Package changed: xorg (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1821882 Title: Screen is very dark and brightness cannot be adjusted Status in linux package in Ubuntu: Incomplete Bug description: Device: Dell Precision 7530 In the BIOS, the Switchable Graphics option is deactived, which means only the nVidia GPU is used. When booting 19.04 beta live USB, the screen becomes very dark and brightness cannot be adjusted. (The same issue happens with 18.04.2) There is only a "nv_backlight" in /sys/class/backlight/ (i.e. no intel_backlight): $ ll /sys/class/backlight/ total 0 drwxr-xr-x 2 root root 0 Mar 27 09:36 ./ drwxr-xr-x 74 root root 0 Mar 27 09:28 ../ lrwxrwxrwx 1 root root 0 Mar 27 09:28 nv_backlight -> ../../devices/pci:00/:00:01.0/:01:00.0/drm/card0/card0-eDP-1/nv_backlight/ Trying to manually change brightness doesn't do anything: $ sudo su root@ubuntu:/home/ubuntu# cd /sys/class/backlight/nv_backlight root@ubuntu:/sys/class/backlight/nv_backlight# ll total 0 drwxr-xr-x 3 root root0 Mar 27 09:28 ./ drwxr-xr-x 4 root root0 Mar 27 09:28 ../ -r--r--r-- 1 root root 4096 Mar 27 09:37 actual_brightness -rw-r--r-- 1 root root 4096 Mar 27 09:37 bl_power -rw-r--r-- 1 root root 4096 Mar 27 09:28 brightness lrwxrwxrwx 1 root root0 Mar 27 09:37 device -> ../../card0-eDP-1/ -r--r--r-- 1 root root 4096 Mar 27 09:28 max_brightness drwxr-xr-x 2 root root0 Mar 27 09:28 power/ lrwxrwxrwx 1 root root0 Mar 27 09:28 subsystem -> ../../../../../../../../class/backlight/ -r--r--r-- 1 root root 4096 Mar 27 09:28 type -rw-r--r-- 1 root root 4096 Mar 27 09:28 uevent root@ubuntu:/sys/class/backlight/nv_backlight# cat actual_brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# cat brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# cat max_brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# echo 50 > brightness root@ubuntu:/sys/class/backlight/nv_backlight# cat brightness 50 Although the value is changed, the screen brightness doesn't change. in dmesg, I can see the following: [0.241878] ACPI: Added _OSI(Module Device) [0.241878] ACPI: Added _OSI(Processor Device) [0.241878] ACPI: Added _OSI(3.0 _SCP Extensions) [0.241878] ACPI: Added _OSI(Processor Aggregator Device) [0.241878] ACPI: Added _OSI(Linux-Dell-Video) [0.241878] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [0.241878] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics) [0.286326] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS01._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.286332] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.286334] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.286336] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS01._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.286339] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.286340] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287096] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS02._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287099] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287101] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287102] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS02._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287105] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287106] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287858] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS03._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287861] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287863] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287864] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS03._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287867] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287869] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.288614] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS04._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.288617] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.288619] ACPI: Skipping parse of
[Touch-packages] [Bug 1821882] Re: Screen is very dark and brightness cannot be adjusted
This bug has been reported on the Ubuntu ISO testing tracker. A list of all reports related to this bug can be found here: http://iso.qa.ubuntu.com/qatracker/reports/bugs/1821882 ** Tags added: iso-testing -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1821882 Title: Screen is very dark and brightness cannot be adjusted Status in xorg package in Ubuntu: New Bug description: Device: Dell Precision 7530 In the BIOS, the Switchable Graphics option is deactived, which means only the nVidia GPU is used. When booting 19.04 beta live USB, the screen becomes very dark and brightness cannot be adjusted. (The same issue happens with 18.04.2) There is only a "nv_backlight" in /sys/class/backlight/ (i.e. no intel_backlight): $ ll /sys/class/backlight/ total 0 drwxr-xr-x 2 root root 0 Mar 27 09:36 ./ drwxr-xr-x 74 root root 0 Mar 27 09:28 ../ lrwxrwxrwx 1 root root 0 Mar 27 09:28 nv_backlight -> ../../devices/pci:00/:00:01.0/:01:00.0/drm/card0/card0-eDP-1/nv_backlight/ Trying to manually change brightness doesn't do anything: $ sudo su root@ubuntu:/home/ubuntu# cd /sys/class/backlight/nv_backlight root@ubuntu:/sys/class/backlight/nv_backlight# ll total 0 drwxr-xr-x 3 root root0 Mar 27 09:28 ./ drwxr-xr-x 4 root root0 Mar 27 09:28 ../ -r--r--r-- 1 root root 4096 Mar 27 09:37 actual_brightness -rw-r--r-- 1 root root 4096 Mar 27 09:37 bl_power -rw-r--r-- 1 root root 4096 Mar 27 09:28 brightness lrwxrwxrwx 1 root root0 Mar 27 09:37 device -> ../../card0-eDP-1/ -r--r--r-- 1 root root 4096 Mar 27 09:28 max_brightness drwxr-xr-x 2 root root0 Mar 27 09:28 power/ lrwxrwxrwx 1 root root0 Mar 27 09:28 subsystem -> ../../../../../../../../class/backlight/ -r--r--r-- 1 root root 4096 Mar 27 09:28 type -rw-r--r-- 1 root root 4096 Mar 27 09:28 uevent root@ubuntu:/sys/class/backlight/nv_backlight# cat actual_brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# cat brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# cat max_brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# echo 50 > brightness root@ubuntu:/sys/class/backlight/nv_backlight# cat brightness 50 Although the value is changed, the screen brightness doesn't change. in dmesg, I can see the following: [0.241878] ACPI: Added _OSI(Module Device) [0.241878] ACPI: Added _OSI(Processor Device) [0.241878] ACPI: Added _OSI(3.0 _SCP Extensions) [0.241878] ACPI: Added _OSI(Processor Aggregator Device) [0.241878] ACPI: Added _OSI(Linux-Dell-Video) [0.241878] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [0.241878] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics) [0.286326] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS01._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.286332] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.286334] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.286336] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS01._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.286339] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.286340] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287096] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS02._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287099] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287101] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287102] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS02._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287105] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287106] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287858] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS03._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287861] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287863] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287864] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS03._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287867] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287869] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.288614] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS04._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.288617] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.288619] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.288620] ACPI BIOS Error (bug):
[Touch-packages] [Bug 1821882] Re: Screen is very dark and brightness cannot be adjusted
** Tags added: ce-qa-concern -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1821882 Title: Screen is very dark and brightness cannot be adjusted Status in xorg package in Ubuntu: New Bug description: Device: Dell Precision 7530 In the BIOS, the Switchable Graphics option is deactived, which means only the nVidia GPU is used. When booting 19.04 beta live USB, the screen becomes very dark and brightness cannot be adjusted. (The same issue happens with 18.04.2) There is only a "nv_backlight" in /sys/class/backlight/ (i.e. no intel_backlight): $ ll /sys/class/backlight/ total 0 drwxr-xr-x 2 root root 0 Mar 27 09:36 ./ drwxr-xr-x 74 root root 0 Mar 27 09:28 ../ lrwxrwxrwx 1 root root 0 Mar 27 09:28 nv_backlight -> ../../devices/pci:00/:00:01.0/:01:00.0/drm/card0/card0-eDP-1/nv_backlight/ Trying to manually change brightness doesn't do anything: $ sudo su root@ubuntu:/home/ubuntu# cd /sys/class/backlight/nv_backlight root@ubuntu:/sys/class/backlight/nv_backlight# ll total 0 drwxr-xr-x 3 root root0 Mar 27 09:28 ./ drwxr-xr-x 4 root root0 Mar 27 09:28 ../ -r--r--r-- 1 root root 4096 Mar 27 09:37 actual_brightness -rw-r--r-- 1 root root 4096 Mar 27 09:37 bl_power -rw-r--r-- 1 root root 4096 Mar 27 09:28 brightness lrwxrwxrwx 1 root root0 Mar 27 09:37 device -> ../../card0-eDP-1/ -r--r--r-- 1 root root 4096 Mar 27 09:28 max_brightness drwxr-xr-x 2 root root0 Mar 27 09:28 power/ lrwxrwxrwx 1 root root0 Mar 27 09:28 subsystem -> ../../../../../../../../class/backlight/ -r--r--r-- 1 root root 4096 Mar 27 09:28 type -rw-r--r-- 1 root root 4096 Mar 27 09:28 uevent root@ubuntu:/sys/class/backlight/nv_backlight# cat actual_brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# cat brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# cat max_brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# echo 50 > brightness root@ubuntu:/sys/class/backlight/nv_backlight# cat brightness 50 Although the value is changed, the screen brightness doesn't change. in dmesg, I can see the following: [0.241878] ACPI: Added _OSI(Module Device) [0.241878] ACPI: Added _OSI(Processor Device) [0.241878] ACPI: Added _OSI(3.0 _SCP Extensions) [0.241878] ACPI: Added _OSI(Processor Aggregator Device) [0.241878] ACPI: Added _OSI(Linux-Dell-Video) [0.241878] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [0.241878] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics) [0.286326] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS01._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.286332] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.286334] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.286336] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS01._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.286339] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.286340] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287096] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS02._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287099] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287101] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287102] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS02._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287105] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287106] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287858] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS03._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287861] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287863] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287864] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS03._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287867] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287869] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.288614] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS04._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.288617] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.288619] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.288620] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS04._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.288623] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog
[Touch-packages] [Bug 1821882] Re: Screen is very dark and brightness cannot be adjusted
I tried the same while blacklisting nouveau driver in grub: $ cat /proc/cmdline BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash modprobe.blacklist=nouveau --- This time, I have "acpi_video0" in /sys/class/backlight, but the result is the same. The screen is very dark. /sys/class/backlight/acpi_video0/brightness is 100 by default. I can modify this value with $ sudo su # echo 60 > /sys/class/backlight/acpi_video0/brightness and the brightness actually changes to something even darker. If I try to set it over 100, I get: write error: Invalid argument -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1821882 Title: Screen is very dark and brightness cannot be adjusted Status in xorg package in Ubuntu: New Bug description: Device: Dell Precision 7530 In the BIOS, the Switchable Graphics option is deactived, which means only the nVidia GPU is used. When booting 19.04 beta live USB, the screen becomes very dark and brightness cannot be adjusted. (The same issue happens with 18.04.2) There is only a "nv_backlight" in /sys/class/backlight/ (i.e. no intel_backlight): $ ll /sys/class/backlight/ total 0 drwxr-xr-x 2 root root 0 Mar 27 09:36 ./ drwxr-xr-x 74 root root 0 Mar 27 09:28 ../ lrwxrwxrwx 1 root root 0 Mar 27 09:28 nv_backlight -> ../../devices/pci:00/:00:01.0/:01:00.0/drm/card0/card0-eDP-1/nv_backlight/ Trying to manually change brightness doesn't do anything: $ sudo su root@ubuntu:/home/ubuntu# cd /sys/class/backlight/nv_backlight root@ubuntu:/sys/class/backlight/nv_backlight# ll total 0 drwxr-xr-x 3 root root0 Mar 27 09:28 ./ drwxr-xr-x 4 root root0 Mar 27 09:28 ../ -r--r--r-- 1 root root 4096 Mar 27 09:37 actual_brightness -rw-r--r-- 1 root root 4096 Mar 27 09:37 bl_power -rw-r--r-- 1 root root 4096 Mar 27 09:28 brightness lrwxrwxrwx 1 root root0 Mar 27 09:37 device -> ../../card0-eDP-1/ -r--r--r-- 1 root root 4096 Mar 27 09:28 max_brightness drwxr-xr-x 2 root root0 Mar 27 09:28 power/ lrwxrwxrwx 1 root root0 Mar 27 09:28 subsystem -> ../../../../../../../../class/backlight/ -r--r--r-- 1 root root 4096 Mar 27 09:28 type -rw-r--r-- 1 root root 4096 Mar 27 09:28 uevent root@ubuntu:/sys/class/backlight/nv_backlight# cat actual_brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# cat brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# cat max_brightness 100 root@ubuntu:/sys/class/backlight/nv_backlight# echo 50 > brightness root@ubuntu:/sys/class/backlight/nv_backlight# cat brightness 50 Although the value is changed, the screen brightness doesn't change. in dmesg, I can see the following: [0.241878] ACPI: Added _OSI(Module Device) [0.241878] ACPI: Added _OSI(Processor Device) [0.241878] ACPI: Added _OSI(3.0 _SCP Extensions) [0.241878] ACPI: Added _OSI(Processor Aggregator Device) [0.241878] ACPI: Added _OSI(Linux-Dell-Video) [0.241878] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio) [0.241878] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics) [0.286326] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS01._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.286332] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.286334] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.286336] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS01._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.286339] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.286340] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287096] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS02._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287099] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287101] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287102] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS02._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287105] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287106] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287858] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS03._UPC], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287861] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287863] ACPI: Skipping parse of AML opcode: Method (0x0014) [0.287864] ACPI BIOS Error (bug): Failure creating [\_SB.PCI0.XHC.RHUB.HS03._PLD], AE_ALREADY_EXISTS (20181213/dswload2-324) [0.287867] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20181213/psobject-221) [0.287869] ACPI:
