I know this is a common problem but even after like four days of reading through different forums I wasn't able to fix it. I'm fairly new to Linux, by the way, so sorry in advance. Here's the situation:
I have an old Toshiba Satellite C660 with Windows 7. A week ago I installed Ubuntu 16.04 as the second OS, using the method of creating a new partition by shrinking an existing one. Even though Ubuntu installed just fine, ever since that time when I start the laptop I have about 50% chance of just getting a black screen. No BIOS splash screen, no recovery mode, nothing. I have to do a hard reboot and then it starts normally, BIOS splash screen, then grub loader etc. The weird thing is, it really only happens in about 50% of cases and at other times it boots normally. Even though I can always start the system eventually by doing the hard reboot, it's very annoying.
What I tried so far: Boot-Repair on recommended mode Updating / reinstalling the grub Editing the grub file in different ways (quiet splash, nomode set, etc.)
I don't know if it's related but my brightness keys don't work either.
I use integrated graphics: Mobile Intel® GM45 Express Chipset.
The output of sudo lshw -c display:
*-display:0
description: VGA compatible controller
product: Mobile 4 Series Chipset Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 07
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:29 memory:f2800000-f2bfffff memory:d0000000-dfffffff ioport:1800(size=8) memory:c0000-dffff
*-display:1 UNCLAIMED
description: Display controller
product: Mobile 4 Series Chipset Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2.1
bus info: pci@0000:00:02.1
version: 07
width: 64 bits
clock: 33MHz
capabilities: pm bus_master cap_list
configuration: latency=0
resources: memory:f2100000-f21fffff
Thank you guys in advance for any help. Apart from this issue I'm having a blast using Ubuntu and learning all this new stuff, it's really awesome.
