Tim Wentz, thank you for reporting this and helping make Ubuntu better. Maverick reached EOL on April 10, 2012. Please see this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases
We were wondering if this is still an issue in a supported release? If so, can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ . If it remains an issue, could you run the following command in a supported release from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report. apport-collect -p linux <replace-with-bug-number> Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream- testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Please let us know your results. Thanks in advance. ** Description changed: Laptop: Dell Vostro 3400 OS: Ubuntu 10.10 beta, x64 Maverick Meercat Graphics card: NVIDIA GeForce 310M (GT218) Driver: nouveau `uname -a`: Linux twentz-vostro 2.6.35-20-generic #29-Ubuntu SMP Fri Sep 3 14:55:28 UTC 2010 x86_64 GNU/Linux - When I upgraded to Maverick 10.10 (and after some initial adjustments), my brightness levels are about 50% lower than they should be -- so "0" brightness equates to literally a turned off backlight and "100%" is a dimly lit screen (probably ~50% normal brightness) Some of the bugs related to this issue had some solutions, but I was not able to fully apply them to my problem: using 'setpci' with the device's address didn't seem to work -- of I needed to specify a different value (other than f4.b), but I have no idea where this value came from -- it was just what was used to fix this problem on a different system. I cannot seem to modify the "max_brightness" file in /sys/class/backlight/nv_backlight/ or /sys/class/backlight/acpi_video0/ (these directories have "./brightness" files that change when I adjust the brightness using the FN+up/down keys). I could understand why it would be unmodifiable, but I have no other ideas have to solve the problem. - - twentz@twentz-vostro:/sys/class/backlight/nv_backlight$ lspci - 00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 12) - 00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 12) - 00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06) - 00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) - 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06) - 00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06) - 00:1c.1 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 2 (rev 06) - 00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 3 (rev 06) - 00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 06) - 00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) - 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6) - 00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 06) - 00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 06) - 00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06) - 00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 06) - 01:00.0 VGA compatible controller: nVidia Corporation GT218 [GeForce 310M] (rev a2) - 01:00.1 Audio device: nVidia Corporation High Definition Audio Controller (rev a1) - 12:00.0 Network controller: Broadcom Corporation BCM43224 802.11a/b/g/n (rev 01) - 13:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03) twentz@twentz-vostro:/sys/class/backlight/nv_backlight$ sudo setpci -s 01:00.0 f4.b=ff twentz@twentz-vostro:/sys/class/backlight/nv_backlight$ ls actual_brightness brightness max_brightness subsystem bl_power device power uevent - twentz@twentz-vostro:/sys/class/backlight/nv_backlight$ cat max_brightness + twentz@twentz-vostro:/sys/class/backlight/nv_backlight$ cat max_brightness 1025 twentz@twentz-vostro:/sys/class/backlight/nv_backlight$ sudo sh -c 'echo 1500 > /sys/class/backlight/nv_backlight/max_brightness' sh: cannot create /sys/class/backlight/nv_backlight/max_brightness: Permission denied twentz@twentz-vostro:/sys/class/backlight/nv_backlight$ ls -l total 0 -r--r--r-- 1 root root 4096 2010-09-12 16:11 actual_brightness -rw-r--r-- 1 root root 4096 2010-09-12 16:11 bl_power -rw-r--r-- 1 root root 4096 2010-09-12 15:57 brightness lrwxrwxrwx 1 root root 0 2010-09-12 16:11 device -> ../../../0000:01:00.0 -r--r--r-- 1 root root 4096 2010-09-12 15:57 max_brightness drwxr-xr-x 2 root root 0 2010-09-12 16:11 power lrwxrwxrwx 1 root root 0 2010-09-12 15:57 subsystem -> ../../../../../../class/backlight -rw-r--r-- 1 root root 4096 2010-09-12 15:57 uevent twentz@twentz-vostro:/sys/class/backlight/nv_backlight$ sudo sh -c 'echo 1500 > /sys/class/backlight/nv_backlight/max_brightness' sh: cannot create /sys/class/backlight/nv_backlight/max_brightness: Permission denied twentz@twentz-vostro:/sys/class/backlight/nv_backlight$ su root - Password: + Password: root@twentz-vostro:/sys/class/backlight/nv_backlight# sh -c 'echo 1500 > /sys/class/backlight/nv_backlight/max_brightness' sh: cannot create /sys/class/backlight/nv_backlight/max_brightness: Permission denied (also, other forms of 'echo' or text editing don't seem to work) My laptop's monitor corresponds to "LVDS", but that is never specified in any of the Xorg files that any program generates, nor do I know how to correctly specify it as such (if that would even help) twentz@twentz-vostro:/sys/class/backlight/nv_backlight/device/drm/card0/card0-LVDS-1$ ls -l total 0 lrwxrwxrwx 1 root root 0 2010-09-12 16:16 device -> ../../card0 -r--r--r-- 1 root root 4096 2010-09-12 16:16 dpms -r--r--r-- 1 root root 0 2010-09-12 16:16 edid -r--r--r-- 1 root root 4096 2010-09-12 16:16 enabled -r--r--r-- 1 root root 4096 2010-09-12 16:16 modes drwxr-xr-x 2 root root 0 2010-09-12 16:16 power -r--r--r-- 1 root root 4096 2010-09-12 16:16 status lrwxrwxrwx 1 root root 0 2010-09-12 15:57 subsystem -> ../../../../../../../class/drm -rw-r--r-- 1 root root 4096 2010-09-12 15:57 uevent + I had to change graphics drivers from "nvidia" to "nouveau" because the + Nvidia driver crashes on start-up (different, not germane issue) -- so I + am using the "nouveau" driver - - I had to change graphics drivers from "nvidia" to "nouveau" because the Nvidia driver crashes on start-up (different, not germane issue) -- so I am using the "nouveau" driver - - - Attached is my xorg.conf that I'm using. It was generated automatically by "Xorg -configure" EXCEPT it initially used the "nv' driver, which failed to ever successfully load (something about "modesetting", also happens with the 'vesa' driver -- but 'nouveau' worked) + Attached is my xorg.conf that I'm using. It was generated automatically + by "Xorg -configure" EXCEPT it initially used the "nv' driver, which + failed to ever successfully load (something about "modesetting", also + happens with the 'vesa' driver -- but 'nouveau' worked) ProblemType: Bug DistroRelease: Ubuntu 10.10 Package: linux-image-2.6.35-20-generic 2.6.35-20.29 Regression: No Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4 Uname: Linux 2.6.35-20-generic x86_64 NonfreeKernelModules: wl AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] - Subdevices: 2/2 - Subdevice #0: subdevice #0 - Subdevice #1: subdevice #1 + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog] + Subdevices: 2/2 + Subdevice #0: subdevice #0 + Subdevice #1: subdevice #1 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: twentz 1594 F.... pulseaudio - /dev/snd/pcmC0D0p: twentz 1594 F...m pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: twentz 1594 F.... pulseaudio + /dev/snd/pcmC0D0p: twentz 1594 F...m pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xfbe00000 irq 47' - Mixer name : 'IDT 92HD81B1X5' - Components : 'HDA:111d7605,10280440,00100104' - Controls : 18 - Simple ctrls : 12 + Card hw:0 'Intel'/'HDA Intel at 0xfbe00000 irq 47' + Mixer name : 'IDT 92HD81B1X5' + Components : 'HDA:111d7605,10280440,00100104' + Controls : 18 + Simple ctrls : 12 Card1.Amixer.info: - Card hw:1 'NVidia'/'HDA NVidia at 0xfb080000 irq 16' - Mixer name : 'Nvidia GT21x HDMI' - Components : 'HDA:10de000b,10de0101,00100100' - Controls : 16 - Simple ctrls : 4 + Card hw:1 'NVidia'/'HDA NVidia at 0xfb080000 irq 16' + Mixer name : 'Nvidia GT21x HDMI' + Components : 'HDA:10de000b,10de0101,00100100' + Controls : 16 + Simple ctrls : 4 CheckboxSubmission: bcb8b4c06179696af1b8bb66d96667a6 CheckboxSystem: d00f84de8a555815fa1c4660280da308 Date: Sun Sep 12 17:15:26 2010 HibernationDevice: RESUME=UUID=4b3d5e5a-94be-4426-8f85-2620e5629680 InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) MachineType: Dell Inc. Vostro 3400 ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-20-generic root=UUID=d10ffc55-5e23-4966-9e5c-b2cb317f3874 ro quiet splash ProcEnviron: - PATH=(custom, user) - LANG=en_US.utf8 - SHELL=/bin/bash + PATH=(custom, user) + LANG=en_US.utf8 + SHELL=/bin/bash RelatedPackageVersions: linux-firmware 1.38 RfKill: - 0: dell-wifi: Wireless LAN - Soft blocked: yes - Hard blocked: yes + 0: dell-wifi: Wireless LAN + Soft blocked: yes + Hard blocked: yes SourcePackage: linux UserAsoundrc: - pcm.teeraw { - type empty - slave.pcm "tee:default,'/tmp/out.raw',raw" - # 48000 S16_LE 2ch (aplay -t raw -f dat) - } + pcm.teeraw { + type empty + slave.pcm "tee:default,'/tmp/out.raw',raw" + # 48000 S16_LE 2ch (aplay -t raw -f dat) + } dmi.bios.date: 06/23/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: A05 dmi.board.name: 0RXV7H dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA05:bd06/23/2010:svnDellInc.:pnVostro3400:pvrNotSpecified:rvnDellInc.:rn0RXV7H:rvrA00:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Vostro 3400 dmi.product.version: Not Specified dmi.sys.vendor: Dell Inc. ** Tags added: regression-release ** Tags removed: apport-collected natty ** Attachment removed: "AcpiTables.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116567/+files/AcpiTables.txt ** Attachment removed: "AlsaDevices.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116568/+files/AlsaDevices.txt ** Attachment removed: "AplayDevices.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116569/+files/AplayDevices.txt ** Attachment removed: "BootDmesg.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116570/+files/BootDmesg.txt ** Attachment removed: "Card0.Amixer.values.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116571/+files/Card0.Amixer.values.txt ** Attachment removed: "Card0.Codecs.codec.0.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116572/+files/Card0.Codecs.codec.0.txt ** Attachment removed: "Card1.Amixer.values.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116573/+files/Card1.Amixer.values.txt ** Attachment removed: "Card1.Codecs.codec.0.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116574/+files/Card1.Codecs.codec.0.txt ** Attachment removed: "Card1.Codecs.codec.1.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116575/+files/Card1.Codecs.codec.1.txt ** Attachment removed: "Card1.Codecs.codec.2.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116576/+files/Card1.Codecs.codec.2.txt ** Attachment removed: "Card1.Codecs.codec.3.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116577/+files/Card1.Codecs.codec.3.txt ** Attachment removed: "CurrentDmesg.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116578/+files/CurrentDmesg.txt ** Attachment removed: "IwConfig.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116579/+files/IwConfig.txt ** Attachment removed: "Lspci.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116580/+files/Lspci.txt ** Attachment removed: "Lsusb.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116581/+files/Lsusb.txt ** Attachment removed: "PciMultimedia.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116582/+files/PciMultimedia.txt ** Attachment removed: "ProcCpuinfo.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116583/+files/ProcCpuinfo.txt ** Attachment removed: "ProcCpuinfo_.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116584/+files/ProcCpuinfo_.txt ** Attachment removed: "ProcInterrupts.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116585/+files/ProcInterrupts.txt ** Attachment removed: "ProcModules.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116586/+files/ProcModules.txt ** Attachment removed: "RfKill.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116587/+files/RfKill.txt ** Attachment removed: "UdevDb.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116588/+files/UdevDb.txt ** Attachment removed: "UdevLog.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116589/+files/UdevLog.txt ** Attachment removed: "WifiSyslog.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/636672/+attachment/2116590/+files/WifiSyslog.txt ** Project changed: nouveau => null ** Changed in: null Status: New => Invalid ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/636672 Title: Brightness too low on Dell Vostro To manage notifications about this bug go to: https://bugs.launchpad.net/null/+bug/636672/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
