response from linux-fbdev: Hi Dennis,
Only drivers for DisplayLink's USB 2.0 generation chips (DL-1x5) are available and in kernel. That Dell dock is using the newer DL-3x00 chips. There's no way to get the graphics portion working for Linux on that. Part of the reason is even for USB 2.0 graphics devices where the driver is in kernel, getting anything working is very distro and component-version dependent. You'll see a few success stories if you search around, but they're fleeting. In short, it's not for any normal user. For the longer story (if you have a USB 2.0 generation device), see http://plugable.com/2014/03/06/displaylink-usb-2-0-graphics-adapters-on-linux-2014-edition . By the way, programmatically you can tell the difference between the DL-1x5 chips and the newer ones by these portions of the USB descriptors: idVendor 0x17e9 DisplayLink [this is the vendor ID for all DisplayLink chips, regardless of brand of product they're used in] Configuration Descriptor: Interface Descriptor: bInterfaceClass 255 Vendor Specific Class bInterfaceSubClass 0 bInterfaceProtocol 3 [DL-3x0 chips with in-kernel support have bInterfaceProtocol=3. Later protocols are not supported] This is how they're distinguished in uldfb (the fbdev driver I helped with) and udl (the DRM driver David Airlie created). Sorry for the bad news, Bernie -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1376771 Title: DisplayLink Attached Display Adapter and Monitor Not Recognized Status in “linux” package in Ubuntu: Triaged Bug description: DisplayLink Plug and Play Universal docking Station DELL Model: D3000 MFG: ACP075US SN: 1309017059 All ports on the device are recocognized and function correctly except the display adapter. Description: Ubuntu Utopic Unicorn (development branch) Release: 14.10 This problem also exists under trusty. 14.04 My intention is to drive 2 external monitors with this device. This specific device has no issues under Windows 8.1 ProblemType: Bug DistroRelease: Ubuntu 14.10 Package: linux-image-3.16.0-20-generic 3.16.0-20.27 ProcVersionSignature: Ubuntu 3.16.0-20.27-generic 3.16.3 Uname: Linux 3.16.0-20-generic x86_64 ApportVersion: 2.14.7-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: gesker 2140 F.... pulseaudio CurrentDesktop: Unity Date: Thu Oct 2 08:54:53 2014 HibernationDevice: RESUME=UUID=8d719d41-d691-447b-8dd0-29bbdd631465 InstallationDate: Installed on 2014-08-24 (38 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: System76, Inc. Gazelle Professional ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.16.0-20-generic root=UUID=5dc9a0a5-84ba-495e-b644-8d11f37bece5 ro rootflags=subvol=@ quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.16.0-20-generic N/A linux-backports-modules-3.16.0-20-generic N/A linux-firmware 1.134 SourcePackage: linux UpgradeStatus: Upgraded to utopic on 2014-09-26 (5 days ago) dmi.bios.date: 05/16/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.5 dmi.board.asset.tag: Tag 12345 dmi.board.name: Gazelle Professional dmi.board.vendor: System76, Inc. dmi.board.version: gazp7 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd05/16/2012:svnSystem76,Inc.:pnGazelleProfessional:pvrgazp7:rvnSystem76,Inc.:rnGazelleProfessional:rvrgazp7:cvnNoEnclosure:ct9:cvrN/A: dmi.product.name: Gazelle Professional dmi.product.version: gazp7 dmi.sys.vendor: System76, Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1376771/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
