Guilhermino, as per http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?os=228&lc=en&cc=us&dlc=en&sw_lang=&product=385154#N2663 an update to your computer's buggy and outdated BIOS is available (F.25). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, if the problem is still reproducible, and the information above is provided, then please mark this report Status Confirmed. Otherwise, please mark this as Invalid. Thank you for your understanding. ** Attachment removed: "xserver.outputs.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484777/+files/xserver.outputs.txt ** Attachment removed: "xdpyinfo.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484776/+files/xdpyinfo.txt ** Attachment removed: "Xrandr.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484775/+files/Xrandr.txt ** Attachment removed: "XorgLogOld.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484774/+files/XorgLogOld.txt ** Attachment removed: "XorgLog.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484770/+files/XorgLog.txt ** Attachment removed: "XorgConf.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484768/+files/XorgConf.txt ** Attachment removed: "UdevLog.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484767/+files/UdevLog.txt ** Attachment removed: "UdevDb.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484766/+files/UdevDb.txt ** Attachment removed: "ProcModules.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484765/+files/ProcModules.txt ** Attachment removed: "ProcInterrupts.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484764/+files/ProcInterrupts.txt ** Attachment removed: "ProcEnviron.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484763/+files/ProcEnviron.txt ** Attachment removed: "ProcCpuinfo.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484762/+files/ProcCpuinfo.txt ** Attachment removed: "Lspci.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484761/+files/Lspci.txt ** Attachment removed: "LightdmLog.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484760/+files/LightdmLog.txt ** Attachment removed: "LightdmGreeterLogOld.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484759/+files/LightdmGreeterLogOld.txt ** Attachment removed: "LightdmDisplayLog.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484758/+files/LightdmDisplayLog.txt ** Attachment removed: "DkmsStatus.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484757/+files/DkmsStatus.txt ** Attachment removed: "Dependencies.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484756/+files/Dependencies.txt ** Attachment removed: "CurrentDmesg.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484755/+files/CurrentDmesg.txt ** Attachment removed: "BootLog.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484754/+files/BootLog.txt ** Attachment removed: "BootDmesg.txt" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+attachment/4484753/+files/BootDmesg.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1442378 Title: latest radeon open driver on lubuntu 14.04 displays white flickering scan lines and occasional parts of the windows on external monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1442378/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp