Have to use nomodeset for install (new problem for new distro)

[D3m0n1q_733rz]

I haven't had this problem since around version 12.04 or before (can't recall which one precisely) where, during installation, I have to use nomodeset in order to get my Samsung television to stop turning on and off repeatedly during modeset problems. I would like to mention that my television doesn't support an automatic shutoff mode which would normally cause it to turn off in a powersave situation, so being able to do that would be considered a new feature to me (one maybe worth exploring later). However, this last distro of 15.04 seems to have brought back the old problems with modeset that were once fixed, brought back, fixed again, and now brought back once more.
Unfortunately, I can't give a log of this error due to the nature of the problem causing no visuals and my system deleting any log files upon reboot of the live boot. So, all I can suggest is to look into what changed that would cause modeset to break like this and try to change it back or add-in the fix to the code that existed before, if possible.

Thanks!

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
.tmp.unity.support.test.1:

ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CasperVersion: 1.360
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sun Apr 26 01:52:38 2015
DistUpgraded: Fresh install
DistroCodename: vivid
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 NVIDIA Corporation GM204 [GeForce GTX 980] [10de:13c0] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: eVga.com. Corp. Device [3842:3988]
LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash --- nomodeset
Renderer: Software
SourcePackage: xorg
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/23/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.50
dmi.board.name: X99 Professional
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.50:bd01/23/2015:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnX99Professional:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
version.compiz: compiz 1:0.9.12.1+15.04.20150410.1-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.60-2
version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2build1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
xserver.bootTime: Sun Apr 26 01:33:12 2015
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input DELL Dell USB Wired Multimedia Keyboard KEYBOARD, id 8
 input DELL Dell USB Wired Multimedia Keyboard KEYBOARD, id 9
 input DELL DELL USB Laser Mouse MOUSE, id 10
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.17.1-0ubuntu3

[penalvch (penalvch)]

D3m0n1q_733rz, thank you for reporting this and helping make Ubuntu better. As per http://asrock.com/mb/Intel/Fatal1ty%20X99%20Professional/?cat=Download&os=BIOS an update to your computer's buggy and outdated BIOS is available (1.70). 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, and the information above is provided, then please mark this report Status Confirmed.

Thank you for your understanding.

[D3m0n1q_733rz (cryo-rebirth)]

P1.70
04/21/2015

As I was saying before, this only happened since updating to 15.04 from 14.10. It has more to do with my television not specifying a resolution that is compatible with modeset. For example, it may say that it's 720p tops instead of 1280 x 720 but I'm not sure. I do know that it enjoys staying in a powered-on state while flipping the screen and its light on and off while making the power on and off sound when modeset doesn't work right.
The television shows as a Samsung Electric Company 7" and is presently working at a resolution of 1360 x 768 and looks like crap at 1280 x 720. I'm not sure what has changed in the way that modeset functions, but this would be the second time this same issue has happened with this particular screen. Normally, I would say that it would be the screen at fault, but something in modeset was changed before that fixed the way it handled some of these screens that made it work perfectly. If someone could look at what changed that could make it have this problem, I would really appreciate it.

Also, changed to confirmed as requested.

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 15.04 (vivid) reached end-of-life on February 4, 2016.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.