Green line on screen during boot only

hi, i've a problem with my macbook pro 13" late 2011! After an re-initialization on my macbook happens that only during boot i see a green vertical line on the right side of my display and it disappear after login. This green line starts from the upper side and finish to the down side. Can it be a problem deriverd from a bad os installation??
i'm attaching a photo but i'm sorry for bad image.
thanks for the help!

Try a pram reset:
Shut down your Mac.
Locate the following keys on the keyboard: Option, Command (⌘), P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on your Mac.
Immediately press and hold the Option-Command-P-R keys. You must press this key combination before the gray screen appears. Continue holding the keys down until your Mac restarts, and you hear the startup sound for the second time.
Release the keys.

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Imac shows super weird lines on screen during start up and then freezes at blue screen (WITH PHOTO)

My Imac froze earlier today as I was dragging an image from safari into indesig and when it froze the weirdest pattern overlaid the screen. It looked just like the opacity pattern from photoshop with grey and white squares. I turned the computer off using the power button and unplugged everything.
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http://meijerladdaruppgrejer.wordpress.com/2012/07/24/oops/
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Is this the same problem? Verical Lines" seems a bit diffuse. I've seached for a similar question and found a lot of other types of lines and stripes.
Could this be a solution?
http://support.apple.com/kb/TS3824?viewlocale=en_US&locale=en_US
If so, how do I install the update if I can't get passed the blue screen? Can I start my Imac in safe mode? How?
iMac (Mid 2011): Unresponsive white screen on startup or vertical lines on screen
Symptoms
In certain circumstances, your iMac (Mid 2011) may become unresponsive on startup, with a white or gray background on the display. You may also notice vertical lines on the display while using your iMac.
Resolution
Install the iMac Graphics Firmware Update 2.0 if your computer exhibits these issues. To install the update, chooseSoftware Update from the Apple () menu and follow the onscreen instructions.
Important: Do not interrupt the power to the computer while the update is installing. After the update is finished installing, you will need to restart your iMac.

HT1338 Green lines across screen

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Reset PRAM. http://support.apple.com/kb/PH4405
Best.

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Welcome to Apple Support Communities
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Blank screen during boot, missing video on tty console

I have black screen when booting from docking station where is DVI video output. On laptop itself and over VGA is OK.
Tried modify GRUB2:
GRUB_CMDLINE_LINUX_DEFAULT=“quiet”
for
GRUB_CMDLINE_LINUX_DEFAULT=“i915.modeset=1”
but still the same and can't get video after switch to tty (ctrl+alt+F1) as well
I compare with Debian where tty works fine
found in folder: /etc/modprobe.d/i915-kms.conf
where is:
options i915 modeset=1
in Arch missing this file, any idea what to check?

Mr.Elendig wrote:
https://wiki.archlinux.org/index.php/In … modules.22
This says ati but can in some cases happen on intel with docking stations too:
https://wiki.archlinux.org/index.php/At … rks_in_KMS
The most likely problem is the former though. It tries to use both outputs, and the vga uses a much lower res than the dvi, and therefor your monitor goes black because it doesn't like the video mode.
Thank you for answer.
I modified Grub line for adding one more module parameters fbcon=map:1:
GRUB_CMDLINE_LINUX_DEFAULT="quiet acpi_osi=Linux fbcon=map:1"
and updated grub:
grub-mkconfig -o /boot/grub/grub.cfg
but now after showing Grub table with available systems just frozen video, still I'm able to typing from keyboard to push system forward (encryption password)
I reverse to previous settings.

Command line display disappears during boot [solved]

I've brought my machine up to date with systemd, and have run into this latest problem. I boot with syslinux. My machine has started giving me kernel panics when I boot with the primary configuration, which had
acpi=off
in the append line, I believe to address this very problem. If I boot with the fallback, which does not have this entry, I get a boot that I can access over ssh, but the command line display disappears after running through a few lines. Commenting out the acpi language in the primary gives the same result as the fallback.
If I can't boot with it in there, and can't see the screen with it out, what do I do?
[edit]
I was looking for some information on the boot process to explain what changes during the boot to cause the screen to go from visible to invisible. When it used to boot, I remember a font change happening part way through the boot, but don't remember what caused it. Searching for the boot process on the wiki only gives the systemd page, and I didn't find anything there that was helpful in this regard.
I am downloading a live iso and will try booting with that to see if the display issues are present using that approach.
[edit]
Ok, it had nothing to do with acpi. I was running the nvidia driver. My machine has a processor with a gpu, and apparently it decided to hand off to my intel gpu, which has nothing attached to it, instead of sticking with the nvidia. May have to do with KMS (wiki.archlinux.org/index.php/Kernel_Mode_Setting). So I deleted the nvidia driver per the wiki instructions and added the nouveau driver, enabled the KMS per the instructions, and now I have a command prompt.
Last edited by timm (2013-01-11 20:13:01)

i did systemd.unit=multi-user.target at the boot loader . https://wiki.archlinux.org/index.php/Systemd for more options

WindowServer stuck during booting - only safe mode works

Since today during working it seems the WindowServer stopped functioning.
I can only start the Mac with Shift-Down = Safe Boot. Then it works with all connected screens, but is obviosley unusable, because nothing is working without the extensions.
So I tried to install a new system onto another drive.
Same Problem - Also I can start the OSX installer from the 3rd drive with only pushing the shift key.
It´s the same thing again and again.
Booting - gray screen. In this state I con logon via ssh and can see the process WindowServer stuck. I cannot kill it.
shutdown -r now won´t work.
What is the problem ? - please help !
windowserver.log says:
Mar 03 00:24:05 [63] CGXRestartSessionWorkspace: session workspace exited for session 257 ( on console )
Mar 03 00:24:05 [63] loginwindow connection closed; closing server.
Mar 03 00:24:44 [71] Server is starting up
Holding the shift key it says:
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Mar 02 15:08:50 [63] CGXMappedDisplayStart: Display0 : no display alias property
Mar 02 15:08:50 [63] CGXMappedDisplayStart: Display1 : no display alias property
Mar 02 15:08:50 [63] CGXMappedDisplayStart: Display2 : no display alias property
Mar 02 15:08:50 [63] CGXMappedDisplayStart: Display3 : no display alias property
Mar 02 15:08:50 [63] AGCAttach: Couldn't find any matches
Mar 02 15:08:50 [63] CGXPerformInitialDisplayConfiguration
Mar 02 15:08:50 [63] Display 0x1cab7674: MappedDisplay Unit 0; Vendor 0x472 Model 0xad95 S/N 1916801846; online enabled (0,0)[1440 x 900], Rotation 0, base addr 0x106800000
Mar 02 15:08:50 [63] Display 0x3f003f: MappedDisplay Unit 3; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (2464,0)[1 x 1], Rotation 0, base addr 0x116800000
Mar 02 15:08:50 [63] Display 0x3f003e: MappedDisplay Unit 2; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (2465,0)[1 x 1], Rotation 0, base addr 0x116800000
Mar 02 15:08:50 [63] Display 0x3f003d: MappedDisplay Unit 1; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (2466,0)[1 x 1], Rotation 0, base addr 0x106800000
Mar 02 15:08:51 [63] Display 0x1cab7674: MappedDisplay Unit 0; ColorProfile "Default(sRGB IEC61966-2.1)"
Mar 02 15:08:51 [63] Display 0x1cab7674: MappedDisplay Unit 0; ColorProfile "X192W"

Having a loading bar at startup in OS X Yosemite doesn't mean that you are booting into Safeboot. (As its the new design of the OS) .
Follow the steps in Resolve startup issues and perform disk maintenance with Disk Utility and fsck and see how it goes.

X220 black screen during boot

Hello,
It's my first post, so welcome . I've been a lenovo thinkpad user for a month - X220 with SSD, W7 Professional, umts module and extended battery (if more information is needed I can send the full description) - and a strange bug occurs to my new laptop sometimes. After pressing the power button most of controls (camera, speaker mute, microphone mute) always make a flash. Next, most of the times (80-90%) the thinkpad logo shows up and the Windows 7 boots - that's ok. Unfortunately, about one in ten trials end in getting a black screen just after the flashes of the controls. The screen is enabled - it is just black. I must disable laptop (I don't have to keep the power button long - simple pressing is enough), and then, the second trial always succeed. It only occurs during the fresh, full boot - I didn't notice it after restarts, back from sleep or hibernation. I use docking stations, but it occurs in both ways - with or without docking station. It's not a huge problem to ignore that issue, but I'm worried that it may result in a more serious problem in the future. Any ideas and help will be appreciated.
Best regards,
Krzysztof
Solved!
Go to Solution.

Hi Krzysztof,
I would check if the problem exists if you use the HDD which came with your notebook.
Also check if the SSD is attached firmly to the connector.
Also try a system check with ThinkVantage Toolbox.
http://support.lenovo.com/en_US/detail.page?LegacyDocID=LENV-DIAGS#ltb
If the problem persists with the native HDD like the SSD, then I would contact service.
kind regards
Andreas
Follow @LenovoForums on Twitter! Try the forum search, before first posting: Forum Search Option
Please insert your type, model (not S/N) number and used OS in your posts.
I´m a volunteer here using New X1 Carbon, ThinkPad Yoga, Yoga 11s, Yoga 13, T430s,T510, X220t, IdeaCentre B540.
TIP: If your computer runs satisfactorily now, it may not be necessary to update the system.
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Black Screen during boot Nouveau EVGA GeForce GTX 550 Ti [Solved]

Hello,
First I'd like to start off by admitting that I'm a newb, so I apologize in advance if posting this was unnecessary, but I searched, and though I found many similar problems, I could not solve my problem.
As stated in the subject line, I have an EVGA GeForce GTX 550 Ti, and I cannot make it work with the open source Nouveau driver.
When I try to boot the screen goes black.
If I use the onboard VGA, it works perfectly fine, however, when I switch over to the onboard DVI, my monitor never even gets a signal. I have an MSI board with the Z77 chipset and an Intel I5.
I've tried installing the proprietary Nvidia driver and using that. It boots, the problem is I can't change the screen's resolution to anything other than 800 x 600 and my monitor is 1680 x 1050.
I'd be happy using either driver as long as it works correctly.
Oh yea, I'm running kernel 3.4.5 (which I believe is the latest) and the rest of my system is completely up to date, so please don't link me here: https://bbs.archlinux.org/viewtopic.php?pid=1102763
Thanks in advance!
-daniel
Last edited by xleafr (2012-07-30 04:23:35)

Okay, then onto the nvidia driver problem.
I can't set the resolution to what I want (1680 x 1050). My only option is 800 x 600 which is pretty terrible.
I've tried a few things with xrandr, but nothing worked.
Yea, I was only using tty because when I start x everything was either too large or couldn't see the command line to start x in the first place.
So how can I change my resolution (I've tried editing xorg.conf but once again, my attempt to solve my problem was fruitless).

Red screen during boot up in Windows 7

My Laptop is a Satellite L655D-S5159RD. During and when the booting process starts, the screen displays red color with several vertical lines all through out the usage. It creates blurry and shaky color while using it. All applications, windows 7 OS and internet browsing are all working properly on top of that red color layer. Because of that, all applications that are being used have a distorted color. Any ideas about this problem will be much appreciated. Thank.

To be clear, this is happening during the boot process, even before Windows finishes loading? Unfortunately, that usually indicates a hardware failure that would require servicing. I'm sorry.
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Hanging on blue screen during boot (but Safe Mode OK)

Strange stuff with my iMac G5 -- machine boots normally, gets through Apple icon and spinning spiral, then hangs on blue screen and stays there. Mouse cursor moves but that's it.
Safe boot works normally, all safe-mode functions good. But need network, other services back.
History: Spent most of past week downloading huge, multi-gig file. It eventually downloaded successfully, but during process my wife put computer to sleep a couple of nights without halting download.
Didn't have adverse effect first time, but it froze Finder second and third times, necessitating reboots. Also killed wireless connections for all PCs in network those two times iMac needed reboot, had to reboot gateway as well.
Morning after download finished (Friday), iMac failed to wake up from sleep, wouldn't boot normally, had to go into Safe mode.
Additional RAM was recently installed, but has worked well. Safe mode shows full two gigs in use.
Solutions I've tried, without success:
-- Trashing network preferences in both user and system
-- Re-installing Finder and NetworkInterface apps using Pacifist
-- Removing recently installed extensions in System (extensions put back after that failed to resolve issue)
-- Removing recently installed Startup items (again, put back after that failed to resolve issue)
Clearly it's got something to do with the network interface, but I've tried everything I know how to do. Any ideas? I'm out of them.
Thanks in advance.

The Airport card is not removable in this model -- 2nd rev G5 iMac, with automatic light sensor.
But -- I think I've found what's wrong. Unfortunately there's no easy fix ...
It's most likely the bad-capacitor issue that plagued the 1st rev of G5 iMacs. (This particular machine was a refurb bought direct from Apple in the fall of 2005, so it's possible bad caps were put on during the refurbishing.)
I first heard about the problem a couple of days ago but figured a hardware diagnostic test would catch it. More online research reveals that the hardware test doesn't.
When I popped the case this morning to yank the new RAM, there were definitely a few capacitors that had domed tops. Nothing spilling out anywhere, which was what I was looking for, but I've since found out that even contained bulging is a sign of failure. The capacitors should be instead perfectly flat-topped.
So ... I'm gonna call Apple tomorrow morning and see how much it would cost to replace the mobo. There have been reports in forums that Apple sometimes offers to do it for free, even in cases occurring within the few months.
See this link for examples of Apple picking up the tab for complete mobo replacement: http://www.macosxhints.com/article.php?story=20090314071508354
If that offer isn't made, I will look into having the capacitors replaced. This is at the edge of my own technical abilities so I will first ask my techie friends if they can do it for $100 or so, plus parts ... and if not I'm gonna try to do it myself.
This guy shows you how and sells inexpensive parts to do it with: http://jimwarholic.com/2008/07/how-to-repair-apple-imac-g5.php
There is also a guy out in Missouri who replaces bad capacitors on motherboards for a living: http://www.badcaps.net/ Looks as if he'll charge between $80-120 including shipping and parts. So I may go that route.
In any case it turns out Apple did know about this issue back in 2005 and even instituted a program to fix iMacs that had problems stemming from it for free. (Dell Optiplex machines also had the same problem, which was traced back to a few Taiwanese manufacturers.)
Unfortunately there was no recall (Apple would never have lived that down) nor was the issue highly publicized. You had to wait until your own machine acted up, and then the free-repair program expired at the end of 2008.
I myself never knew about it until a few days ago, and I usually keep up on this stuff -- which is something I will make very clear when I'm on the phone with Apple tomorrow.

Black screen during boot

here is the situation. i restarted my A215-S4757 and left it without signing in for a couple hours. when i came back, the screen was black but i could still see and move the mouse. ctrl + alt + delete wouldn't do anything. i turned it off by holding the power button but same thing happens. only safe mode works but i can't really do anything with that.
i think i had a similar problem last summer and had to use the recovery disc and lost everything. i hope i don't have to resort to that again. any possible solutions/advice/ideas?
thanks

Satellite A215-S4757
Try this.
Turn the computer on and immediately press and hold the F8 key.
On the Advanced Boot Options menu, choose Repair Your Computer.
When you reach the System Recovery Options menu, choose Startup Repair.
If that doesn't do the trick, go back to the System Recovery Options menu and do a System Restore.
If that doesn't fix things either, go back to the System Recovery Options menu, choose Command Prompt, and follow the directions here
How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair start...
-Jerry

[MOOT] UEFI USB Install (from 201306 image) - blank screen during boot

I am trying to install Arch Linux on a Lenovo ThinkPad T431s.
I created a bootable UEFI USB disk image following the instructions on the wiki.
https://wiki.archlinux.org/index.php/UE … B_from_ISO
Attempting to boot from this image I get to a screen that looks like:
Arch Linux archiso x86_64 UEFI USB
UEFI Shell x86_64 v1
UEFI Shell x86_64 v2
After selecting the first option, I get a blank screen.
This appears to be the same (or very similar) to the following issues:
[1] https://bbs.archlinux.org/viewtopic.php?id=151599
[2] https://bbs.archlinux.org/viewtopic.php?id=158530
As suggested by
https://wiki.archlinux.org/index.php/Beginners'_Guide#Preparation
I tried appending a number of things to the initrd line
nomodeset
video=SVIDEO-1:d
i915.modeset=0
with no success (the blank screen was exactly the same).
Some posts in thread [2] indicated that booting in legacy bios mode worked. I created a new disk image (again following the wiki instructions: https://wiki.archlinux.org/index.php/US … ion_Media) and was able to confirm that I could successfully boot from this other image after switching into legacy mode.
In thread [1], there was the suggestion to go into a UEFI shell and try a command like
Shell > fs0:
FS0:\ > cd \arch\boot\x86_64
FS0:\arch\boot\x86_64\ > vmlinuz archisobasedir=arch archisolabel=ARCH_201306 initrd=\arch\boot\x86_64\archiso.img
which I did. After pressing enter nothing happened (the screen did not go blank, all the text remained, no messages appeared).
Eventually in that same thread, a workaround was suggested in this post. I have not tried this because I was unable to understand what exactly was being done, both because of the terse nature of the post and the fact that the referenced article is not in a language which I read (and google translate did not make it clear enough). I was unable to evaluate whether that was a sensible thing to do.
Now, finally, the questions
Firstly, does anyone have any suggestions about how to solve or troubleshoot my blank screen issue?
If not, does anyone have an opinion about which of the workarounds (switching into legacy mode or the one that I don't quite understand yet) would be better? I am not planning to dual boot the system, so I do not need to use UEFI to be win8 friendly, etc.
Last edited by wesphys (2013-06-07 14:36:28)

Auric wrote:
Neri, did you get any further with this? I just got my own Thinkpad Yoga and am facing the same problems. Everything works fine in legacy Boot but the screen stays black on UEFI boot regardless of the known workarounds.
might it help to first install using legacy boot and later on convert to UEFI?
Not really with Arch directly anyways. What you can do is:
1. Use Fedora 20 USB to boot the sucker up
2. Use Archlinux-bootstrap install (download expand etc)
3. Use refind as the bootmanager seems to solve the dual boot issues
ATM i'm fighting a mkinitcpio segfault. But that is after the installation was basically successful. It would be nice if we can find a way to fix the install medium ...
EDIT:
All sorted out. Unfortunately you'll have to bypass the Archlinux Install medium and resort to the fedora 20 installer. I used the XFCE4
version for a smaller download.
Here are the basic steps for a Dual-Boot setup:
In windows (Disk Management) truncate your C: Drive. I ended up making basically what will became /dev/sda4 smaller and didn't not
touch any partition or free space before that. Here's the final Layout:
/dev/sda:
empty space
1. recovery partition
2. ESP
3. reserved
4. windows
5. Linux Root
6. Linux home
7. Swap
The installation happened from within Fedora Live using an Archlinux Boot strap image according to the Wiki for installing from an
existing Linux and the Wiki Installation Guide. I mounted /dev/sda2 (aka. the existing ESP partition) as /boot and installed refind
according to the wiki. Please note, when you install Arch through the archlinux bootstrap method make sure you pacman -S archlinux-keyring
in the bootstrap chroot first before you run the pacstrap command - it will accelerate the process tremendously!
Last edited by neri (2014-01-02 21:40:31)

Blank Screen During Boot

after my latest upgrade I restarted and now the screen goes blank around the point the font changes and it finishes saying kvm disabled by bios. It then goes black and stays black. I've seen an answer posted here: https://bbs.archlinux.org/viewtopic.php?id=86357 in one of the comments. But it's been months since I did any linuxing. So I need some help. How do I mount my root and boot partitions while booted to live media (usb)? I know which is which in lsblk. My next question is what do I then do to chroot into it? I'm guessing mount /dev/sda1 /mnt/root ? Then chroot to it.
Assistance would be much appreciated. Once I get there I can start trying to change some options with mkinitcpip.conf and in Radeon.conf as I have a Radeon card. The changes are listed in wiki here: https://wiki.archlinux.org/index.php/ATI#Disable_KMS but I seem to be having trouble turning modest=0 on while on live media. If someone could assist it would help a lot as my windows box died (of course) and this is my only pc at the moment. I heard this may fix my issue of someone else has another fix please share. Radeon card, 64bit, manufacutrd by HP as HP compaq elite. Has ran arch over a year fine so far and love it compared to other distros
Thanks for the help in advance I feel like a noob I used to be able to do this stuff in my sleep but I've been stuck on a windows server and infrastructure at work for a while now.
Cheers fellow archers.

Sorry was typing on an iPhone. I'll try switching to a new TTY when I get home from work. The screen is powered on, it displays the DVI connection icon in the corner showing it does have a conneciton, everything is just black. I'm booting straight to X. I managed to get in on a live usb, and mount my root home and usr directories. But after doing so I can't seem to get chroot to cooperate. As I recall I just do chroot /mnt/root_mount_point and that should be it yes? Should I use the special arch chroot or regular? I know you use arch chroot when installing but I'm not doing so.
Assuming I finally get chrooted in, I'm hoping modeset = 0 works. From the post I referenced, doing modeset = 0 in radeon.conf after creating /etc/modprobe.d/radeon.conf and doing mkinitcpio -p kernel26 after making changes to /etc/mkinitcpio.conf Not sure what changes to make exactly, but I guess I'll reread the wiki over and over till I get it. I hope this fixes the issue as it did for the other person.
I have a specific quesiton about mkinitcpio -p kernel26... is that the right argument? Should I use kernel26 or is it specific to the machine? I see in the wiki mkinitcpio -p linux. Which is the correct command?
My last update was yesterday. Before that it had been about a month. And I hadn't restarted in about a week or two.
Does this seem correct? Will it fix my issues?
Thanks

Green line on screen during boot only

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