Newish laptop Asus X453 with UEFI and Windows 8.1. Tried to install Ubuntu 15.04 64 bit, installation was fine, but it wouldn't run. I'm not quite ready to ditch Windows completely, so I tried other distros, including CentOS 7 64 bit which does dual boot. I don't understand why Ubuntu wouldn't get past the first screen, yet CentOS 7 does and runs as I'd wanted Ubuntu to just work? Any way to keep Windows 8.1 meantime and dual boot Ubuntu 15.04?
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Try this simple change: Bring up the BIOS (tap Delete as soon as the machine comes on, or maybe F2), and change "OS SELECTION" from "Windows 8" to "Windows 7".
Disclaimer: I am in a slightly different situation from you, but perhaps the solution might be the same. I had installed Ubuntu 12.04, and upgraded it to 14.04, but they would both only complete booting with 3.5.0 kernels, and even then the 14.04 install would freeze when it auto-suspended.
However after I made the small bios change I could boot into Ubuntu 14.04 with the recommended 3.13.0 kernel and it worked well! Now GLX and DPI have been detected, which is a step up from running 12.04 on a 3.5.0 kernel.
(Then to get two-finger scrolling enabled, I just had to install a new kernel and driver.)
joeytwiddle
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Update as at May 2016. Laptop Asus X435M, on trying to get Ubuntu to dual-boot with Windows 8.1. Result: Nothing worked. After a lapse of time, I tried again, and again, and again, with Ubuntu and Linux Mint. Although the live CDs would run, and the installers worked, on start-up the laptop would not proceed past the grub bootloader. Since I hadn't been using Windows for 6 months (using Ubuntu on my main m/c) I let the installers use the whole hard disk. And again, got nothing. In BIOS, after the Asus splashscreen, using Esc to access the BIOS, with Secure Boot disabled, CSM/Legacy enabled and the I/O USB unlocked (the Asus has no optical drive so I was using a USB DVD writer) again total failure. The laptop didn't work at all. Rescued with Knoppix 7 - thank you, Knoppix developers! That got the Asus a working operating system, at least. Taking heart, I tried to install Ubuntu which failed again, and Linix Mint which also failed. Then I tried other distros, Mageia, OpenSUSE. At one point I had to again install Knoppix to get the laptop a working OS again. The only distro (of those I tried) that worked on this particular Asus laptop was OpenSUSE. Initially 13.2, but since it worked, now it's working with OpenSUSE Leap 17.1 installed (KDE version). In conclusion for this particular laptop, I can only guess there's some basic hardware incompatibility. For this one, it's OpenSUSE or Knoppix. Though I can live with either since this laptop was to be used for mainly composing essays, I will stick with Ubuntu or Linux Mint on my main computer.
Kate49
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