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[This is an automated message performed by a Launchpad user owned by Brian Murray. Please contact him regarding any issues with the action taken in this bug report.] -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1091068 Title: [Dell Precision T1650] DisplayPort not working, no hotplug support. Status in “libdrm” package in Ubuntu: In Progress Status in “linux” package in Ubuntu: Incomplete Status in “mesa” package in Ubuntu: Fix Released Status in “xserver-xorg-video-intel” package in Ubuntu: In Progress Bug description: cid:201201-10376 There are three ports, two DisplayPorts and one VGA, only the initial cold plugged port will work, and others will not work if you try to hot swap, but the initial one remains working if you plug back. And the system became really laggy when plugged DisplayPort, no matter it's coldplugged or hot swap later. Trying to hotplug on DisplayPort, getting following messages from syslog: Dec 16 21:50:49 201201-10376 kernel: [ 223.751560] irq 16: nobody cared (try booting with the "irqpoll" option) Dec 16 21:50:49 201201-10376 kernel: [ 223.751567] Pid: 0, comm: swapper/0 Tainted: G C 3.2.0-34-generic #53-Ubuntu Dec 16 21:50:49 201201-10376 kernel: [ 223.751569] Call Trace: Dec 16 21:50:49 201201-10376 kernel: [ 223.751571] <IRQ> [<ffffffff810db2bd>] __report_bad_irq+0x3d/0xe0 Dec 16 21:50:49 201201-10376 kernel: [ 223.751584] [<ffffffff810db545>] note_interrupt+0x135/0x190 Dec 16 21:50:49 201201-10376 kernel: [ 223.751588] [<ffffffff810d8dba>] handle_irq_event_percpu+0xaa/0x210 Dec 16 21:50:49 201201-10376 kernel: [ 223.751592] [<ffffffff810d8f71>] handle_irq_event+0x51/0x80 Dec 16 21:50:49 201201-10376 kernel: [ 223.751596] [<ffffffff810dbf9a>] handle_fasteoi_irq+0x6a/0x110 Dec 16 21:50:49 201201-10376 kernel: [ 223.751601] [<ffffffff81015282>] handle_irq+0x22/0x40 Dec 16 21:50:49 201201-10376 kernel: [ 223.751606] [<ffffffff81666eda>] do_IRQ+0x5a/0xe0 Dec 16 21:50:49 201201-10376 kernel: [ 223.751610] [<ffffffff8165c26e>] common_interrupt+0x6e/0x6e Dec 16 21:50:49 201201-10376 kernel: [ 223.751612] <EOI> [<ffffffff8108e189>] ? enqueue_hrtimer+0x39/0xc0 Dec 16 21:50:49 201201-10376 kernel: [ 223.751623] [<ffffffff8139521a>] ? arch_local_irq_enable+0xb/0xd Dec 16 21:50:49 201201-10376 kernel: [ 223.751627] [<ffffffff81395e1d>] acpi_idle_enter_c1+0x95/0xbf Dec 16 21:50:49 201201-10376 kernel: [ 223.751632] [<ffffffff81507261>] cpuidle_idle_call+0xc1/0x280 Dec 16 21:50:49 201201-10376 kernel: [ 223.751636] [<ffffffff8101222a>] cpu_idle+0xca/0x120 Dec 16 21:50:49 201201-10376 kernel: [ 223.751642] [<ffffffff8162241e>] rest_init+0x72/0x74 Dec 16 21:50:49 201201-10376 kernel: [ 223.751647] [<ffffffff81cfbc03>] start_kernel+0x3b0/0x3bd Dec 16 21:50:49 201201-10376 kernel: [ 223.751652] [<ffffffff81cfb388>] x86_64_start_reservations+0x132/0x136 Dec 16 21:50:49 201201-10376 kernel: [ 223.751657] [<ffffffff81cfb140>] ? early_idt_handlers+0x140/0x140 Dec 16 21:50:49 201201-10376 kernel: [ 223.751661] [<ffffffff81cfb459>] x86_64_start_kernel+0xcd/0xdc Dec 16 21:50:49 201201-10376 kernel: [ 223.751663] handlers: Dec 16 21:50:49 201201-10376 kernel: [ 223.751667] [<ffffffff81492740>] usb_hcd_irq Dec 16 21:50:49 201201-10376 kernel: [ 223.751669] Disabling IRQ #16 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-34-generic 3.2.0-34.53 ProcVersionSignature: Ubuntu 3.2.0-34.53-generic 3.2.33 Uname: Linux 3.2.0-34-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu15 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 1476 F.... pulseaudio CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf7c30000 irq 46' Mixer name : 'Intel PantherPoint HDMI' Components : 'HDA:10ec0269,1028053a,00100100 HDA:80862806,80860101,00100000' Controls : 38 Simple ctrls : 16 Date: Sun Dec 16 21:55:26 2012 HibernationDevice: RESUME=UUID=722ec9f2-392d-40de-b3d6-5aa702f4b5be InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1) IwConfig: lo no wireless extensions. eth0 no wireless extensions. MachineType: Dell Inc. Precision T1650 MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-34-generic root=UUID=ed31dac2-f2b8-4a04-9295-8534f1cfe58b ro quiet splash initcall_debug vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.2.0-34-generic N/A linux-backports-modules-3.2.0-34-generic N/A linux-firmware 1.79.1 RfKill: SourcePackage: linux StagingDrivers: mei UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/09/2012 dmi.bios.vendor: Dell Inc. dmi.bios.version: X72 dmi.board.vendor: Dell Inc. dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrX72:bd08/09/2012:svnDellInc.:pnPrecisionT1650:pvr01:rvnDellInc.:rn:rvr:cvnDellInc.:ct6:cvr: dmi.product.name: Precision T1650 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. 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