A broken screen?

[Guest]

Hi,

Today I've noticed a black rim around the screen, a dark bar at the top rim of the screen can be noticed, it's bigger than the others rims.
The cursor cannot "touch" the scree rim, apparently there is some 2-3 mm, black gap between screen rim and the display rim.
I'm afraid that I have a broken screen because the same occurs in Windows.
Anyway, is there any thing can I do to test the screen or not?

Lenovo, G70-70,

lshw

*-display
            description: VGA compatible controller
            product: Haswell-ULT Integrated Graphics Controller
            vendor: Intel Corporation
            physical id: 2
            bus info: pci@0000:00:02.0
            version: 0b
            width: 64 bits
            clock: 33MHz
            capabilities: msi pm vga_controller bus_master cap_list rom
            configuration: driver=i915 latency=0
            resources: irq:47 memory:c3000000-c33fffff memory:d0000000-dfffffff ioport:5000(size=64) memory:c0000-dffff

lspci
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)          
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)              
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)                          
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)                           
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)                              
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4)                                
00:1c.3 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 4 (rev e4)                                   
00:1c.4 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 5 (rev e4)                                     
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04)                                                 
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)                                                     
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04)                                    
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)
02:00.0 Network controller: Broadcom Limited BCM43142 802.11b/g/n (rev 01)
03:00.0 3D controller: NVIDIA Corporation GF117M [GeForce 610M/710M/810M/820M / GT 620M/625M/630M/720M] (rev a1)

[simonsaysthis]

Oh dear. I don't think there is much more testing possible. The screen LCD seems to be broken. On a positive note this is not the end of the world. Replacement screens for this machine are readily available and won't leave you bankrupt. You get order on amazon etc and have a repair shop put it in.

[GreyGeek]

What simonsaysthis writes is probably true. I noticed you have a secondary NVidia GF117M GPU. I'd try installing the nvidia-378 driver and its dependencies and recommendations and see what happens when you switch to it.