- #UBUNTU 14.04 STARTX BLACK SCREEN WONT BOOT INSTALL#
- #UBUNTU 14.04 STARTX BLACK SCREEN WONT BOOT DRIVER#
- #UBUNTU 14.04 STARTX BLACK SCREEN WONT BOOT PASSWORD#
You can disable vesafb in grub by passing it a nonsensical parameter. However this can misbehave sometimes (e.g.
#UBUNTU 14.04 STARTX BLACK SCREEN WONT BOOT DRIVER#
The kernel uses a framebuffer driver for this, such as -vesafb. For systems that support Kernel Mode Setting (KMS), this includes using the higher resolutions of the video card. The linux kernel uses the framebuffer for doing graphics prior to X starting up. Workaround C: Disable the VESA framebuffer from grub If that solves the issue, you can remove it from your /boot/grub/menu.lst as a workaround. To check this, in the grub menu edit the kernel line and remove 'splash' from the end of the line, and boot. This is because with plymouth in initrd, it's a bit racy. However, if plymouth dies at just the right time it can leave the system stuck on a blank vt, and can't recover. If Plymouth crashes during boot, X *should* still boot up, just that you'll be left looking at a black screen a lot longer than you'd like.
See X/NonGraphicalBoot for additional ideas. You can disable the graphical bootscreen via: The login screen is drawn on the screen.X attempts to put the card into one of its higher resolutions, such as the preferred resolution.gdm is started, which instantiates a new X session for the login screen to replace the framebuffer's graphics.The framebuffer is initialized with a purple background. If the kernel supports Mode Setting (KMS), it puts the video card into its preferred resolution using a frame buffer (vesafb).BIOS detects hard drive with a bootloader (grub) present and starts it.Here's what's going on under the hood during each of these steps: Here is a typical sequence of phases your system goes through as it boots: You may notice flickers during boot - these are indications that different processes are starting up and interacting with the GPU. This can happen for a bunch of different reasons as different processes run as your system boots up. Try disabling compiz ( sudo chmod a-x /usr/bin/compiz), logging in as a different user, or turning off DRI.īlank or black screens generally indicate a failure feeding data to the Graphics Processing Unit (GPU) in your video card.
#UBUNTU 14.04 STARTX BLACK SCREEN WONT BOOT PASSWORD#
If it occurs *after* entering your password on the login page, you have some different class of issue, such as an issue with 3D / DRM. Obtaining register dumps (see below) may still be of value however.
#UBUNTU 14.04 STARTX BLACK SCREEN WONT BOOT INSTALL#
Another workaround that worked (for me) is to install a version of ubuntu parallel to the bugged version. Symptom Variation: The bug shows up the same way, yet can be worked around by attaching an external monitor or letting the system go into standby and resume the system. The issue can occur every time you boot, only irregularly, or only under certain circumstances (such as with a particular device plugged in). playing the login sounds, responding to pings, etc.) or it could be completely locked up requiring a reboot. Aside from video, the system might still be working (e.g. Symptoms: The screen becomes 100% blank (no backlight or indication that the LEDs or CRT phosphors are lit up), or black (the monitor is on and displaying video, it's just 100% pure black), at some point between the BIOS screen and the login page (GDM) being displayed.
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