This question may be marked as duplicate but questions I've found alike in askubuntu stackoverflow ubuntuforum can not solve this problem or give me an answer.
The model of my laptop is Acer V7-481 which comes with an i3-3227U CPU and NO graphic card.
When I was installing ubuntu 12.04 for the first time, the laptop booted up in a black screen
The only solution to this is to add a boot parameter
nomodeset or something to disable the KMS.
Other solutions I found are useless, including
acpi related and adjust the backlight using shortcuts etc.
Now, my laptop can only boot with
nomodeset but I don't think the integrated graphic card is functioning normally.
- I cannot connect to a second monitor via HDMI and Display Port
- unity is running in 2d mode
- can't use 3d hardware acceleration
out put of
Linux v7 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
out put of
lshw -c video
*-display UNCLAIMED description: VGA compatible controller product: 3rd Gen Core processor Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list configuration: latency=0 resources: memory:c0000000-c03fffff memory:b0000000-bfffffff ioport:3000(size=64)