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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
Code:
uname -a
Code:
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
As far as the testing the hardware is concerned, I would try booting the laptop with a live CD of a different distro, with a newer version. Knoppix is usually very good at working with any hardware, so I'd download a copy of that.
Assuming the hardware is fine, I personally would try a newer version of Ubuntu, (or Mint or something) unless there's a very good reason that you're sticking with Ubuntu 12.04. That would be the easiest solution since there are numerous reports of all sorts of quirky Ivy Bridge HD4000 laptop issues out there.
My guess is that device wasn't invented when 12 came out. (could be wrong)
Try the newer 14 and see what happens. Generally Intel products are some of the most linux friendly. Intel provides drivers to almost every product they offer.
My guess is that device wasn't invented when 12 came out. (could be wrong)
Try the newer 14 and see what happens. Generally Intel products are some of the most linux friendly. Intel provides drivers to almost every product they offer.
As far as the testing the hardware is concerned, I would try booting the laptop with a live CD of a different distro, with a newer version. Knoppix is usually very good at working with any hardware, so I'd download a copy of that.
Assuming the hardware is fine, I personally would try a newer version of Ubuntu, (or Mint or something) unless there's a very good reason that you're sticking with Ubuntu 12.04. That would be the easiest solution since there are numerous reports of all sorts of quirky Ivy Bridge HD4000 laptop issues out there.
Well, I've tried Ubuntu, Debian, Centos, Fedora
and Archlinux which doesn't come with a GUI but still boot into black screen without nomodeset
when you say black screen, are you sure the brightness isn't just set to 0. My intel card does that on my HP laptop. As soon as the intel driver kicks in, the screen brightness goes to zero.
when you say black screen, are you sure the brightness isn't just set to 0. My intel card does that on my HP laptop. As soon as the intel driver kicks in, the screen brightness goes to zero.
I'm afraid that really it's not what you encountered.
When boot with out nomodeset, I can adjust the blacklight with shortcuts but the screen just changes from lighter grey to darker grey
and I'm sure the system is up because of the sound
You need to look at all the replies and why they are there.
I am making an assumption of the driver and combination of motherboard may be doing this.
"nomodeset
The newest kernels have moved the video mode setting into the kernel. So all the programming of the hardware specific clock rates and registers on the video card happen in the kernel rather than in the X driver when the X server starts.. This makes it possible to have high resolution nice looking splash (boot) screens and flicker free transitions from boot splash to login screen. Unfortunately, on some cards this doesnt work properly and you end up with a black screen. Adding the nomodeset parameter instructs the kernel to not load video drivers and use BIOS modes instead until X is loaded"
So, we'd consider moving driver out of kernel, load new driver, or adjust kernel settings.
It may do that upon build of Intel's linux drivers from their site. It may fix your issue if you tried to build driver from source. I assume that above is correct in that the video setting is in the kernel. You can't get to it like you used to. See this for clues. https://wiki.archlinux.org/index.php...l_mode_setting
You need to look at all the replies and why they are there.
I am making an assumption of the driver and combination of motherboard may be doing this.
"nomodeset
The newest kernels have moved the video mode setting into the kernel. So all the programming of the hardware specific clock rates and registers on the video card happen in the kernel rather than in the X driver when the X server starts.. This makes it possible to have high resolution nice looking splash (boot) screens and flicker free transitions from boot splash to login screen. Unfortunately, on some cards this doesnt work properly and you end up with a black screen. Adding the nomodeset parameter instructs the kernel to not load video drivers and use BIOS modes instead until X is loaded"
So, we'd consider moving driver out of kernel, load new driver, or adjust kernel settings.
It may do that upon build of Intel's linux drivers from their site. It may fix your issue if you tried to build driver from source. I assume that above is correct in that the video setting is in the kernel. You can't get to it like you used to. See this for clues. https://wiki.archlinux.org/index.php...l_mode_setting
The nomodeset does indeed not only deactivate KMS, but the whole driver. Booting in blackscreens often is caused when the video driver is not able to properly determine the correct resolution or refreshrate for your display. Usually this can be fixed by telling the driver which mode to use, using the video= kernel-option. Try to add this to the option GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub:
Code:
video=1024x768@60
Of course you can also set the native resolution instead of 1024x768 (which is a setting that virtually any display/monitor can handle).
After you have changed that file run the
Code:
sudo update-grub
command and restart the machine to look if that worked.
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