Public bug reported: On an HP EliteBook 8440w with an NVidia Quadro NVS 3100M graphics card, the display backlight can be changed in brightness using hotkeys without problems but once the display has gone into powersave mode after inactivity, it does not turn back on.
I can see that the display image itself comes back from black when having the display output cloned via external graphics output but the laptop panel stays black all the time. I can only get the panel reactivated by switching to a text console (e.g. CTRL+ALT+F1) and back (CTRL+ALT+F7 or 8). Please indicate if any additional information is needed. ProblemType: Bug DistroRelease: Ubuntu 10.10 Package: nvidia-current 260.19.06-0ubuntu1 ProcVersionSignature: Ubuntu 2.6.35-22.35-generic-pae 2.6.35.4 Uname: Linux 2.6.35-22-generic-pae i686 NonfreeKernelModules: nvidia .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86 Kernel Module 260.19.06 Mon Sep 13 06:35:06 PDT 2010 GCC version: gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5) Architecture: i386 Date: Sat Oct 30 15:38:43 2010 DkmsStatus: nvidia-current, 260.19.06, 2.6.35-22-generic-pae, i686: installed EcryptfsInUse: Yes InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate i386 (20100928) MachineType: Hewlett-Packard HP EliteBook 8440w PccardctlIdent: Socket 0: product info: "RICOH", "Bay8Controller", "", "" manfid: 0x0000, 0x0000 function: 254 (unknown) PccardctlStatus: Socket 0: 3.3V 16-bit PC Card Subdevice 0 (function 0) bound to driver "pata_pcmcia" ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic-pae root=UUID=ebabb721-6bb5-4c37-9695-b461c05a9048 ro quiet splash ProcEnviron: LANG=en_CA.utf8 SHELL=/bin/bash SourcePackage: nvidia-graphics-drivers dmi.bios.date: 08/23/2010 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68CCU Ver. F.0E dmi.board.name: 172B dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 30.30 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68CCUVer.F.0E:bd08/23/2010:svnHewlett-Packard:pnHPEliteBook8440w:pvr:rvnHewlett-Packard:rn172B:rvrKBCVersion30.30:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP EliteBook 8440w dmi.sys.vendor: Hewlett-Packard glxinfo: Error: [Errno 2] No such file or directory system: distro: Ubuntu codename: maverick architecture: i686 kernel: 2.6.35-22-generic-pae ** Affects: nvidia-graphics-drivers (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 maverick -- Backlight does not turn back on after powersave https://bugs.launchpad.net/bugs/668860 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs