bug also affect ubuntu 15.04 -- 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/1442447
Title: Swichable Graphics not working - Intel Hd 4400-Radeon 8850M- DELL - Latitude 3540 Status in linux package in Ubuntu: Confirmed Bug description: The point is, the radeon venus pro hd 8850m cannot be turned on on linux, you can try official or open source drivers. I think the problem is by the dynamic switchable mode thats make a vga switch on windows without get a black screen, the discrete gpu are connected by hardware to the internal intel graphics card that cannot be turned off or you will have no image xD. Also on windows the intel drivers+amd must be instaled to turn amd graphics on, but on linux thats impossible. Already tryed all drivers from amd, on ubuntu 14.04 and 14.10, it will install ok and when ubuntu restart it will be on low graphics mode and only back to work if i purge then. "You are sure the both vgas are working on linux? If you can i will give my Latitude 3540 to you! hahaha By the f***** Dynamic Mode switchable graphics and the impossibility to turn the intel adapter off by bios settings, Its impossible to turn on the Venus Pro Radeon - HD 8850m on ubuntu! Already tried with versions 14.04 amd 14.10 too." --- ApportVersion: 2.14.7-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: pp 2497 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 14.10 HibernationDevice: RESUME=UUID=ed697923-f15a-491d-893c-5aad47c2a4ba InstallationDate: Installed on 2014-10-24 (169 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: Dell Inc. Latitude 3540 Package: linux (not installed) ProcFB: 0 inteldrmfb 1 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-34-generic.efi.signed root=UUID=56fd3629-556f-48b5-ba86-352fcbe527d5 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.16.0-34.45-generic 3.16.7-ckt8 RelatedPackageVersions: linux-restricted-modules-3.16.0-34-generic N/A linux-backports-modules-3.16.0-34-generic N/A linux-firmware 1.138.1 Tags: utopic Uname: Linux 3.16.0-34-generic x86_64 UpgradeStatus: Upgraded to utopic on 2015-02-25 (45 days ago) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 01/28/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 09HY4K dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A10 dmi.modalias: dmi:bvnDellInc.:bvrA10:bd01/28/2015:svnDellInc.:pnLatitude3540:pvrA10:rvnDellInc.:rn09HY4K:rvrA00:cvnDellInc.:ct8:cvrA10: dmi.product.name: Latitude 3540 dmi.product.version: A10 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1442447/+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
