I have just installed 12.04 LTS alongside my Windows 7 OS. I restarted my computer and loaded Ubuntu from the boot screen. The purple Ubuntu screen shows and goes away and the log-in screen appears. However, the system seems to be really slow. Mouse input is extremely lagged, although keyboard input is nominal. After I input my password, the system never logs in. The log in screen went away the first time I logged in, but it wouldn't do anything else, and all subsequent log-in attempts have resulted in nothing happening. In all accounts, the cursor would still move but was still very lagged.
My system specs are as follows:
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.120305-1505)
Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
System Model: Inspiron M5030
BIOS: BIOS Date: 01/09/10 15:17:22 Ver: 08.00.10
Processor: AMD Athlon(tm) II P360 Dual-Core Processor (2 CPUs), ~2.3GHz
Memory: 4096MB RAM
Available OS Memory: 3836MB RAM
Windows Dir: C:\windows
DirectX Version: DirectX 11
Graphics Card name: ATI Mobility Radeon HD 4250
Manufacturer: ATI Technologies Inc.
Chip type: ATI display adapter (0x9712)
Display Memory: 1914 MB
Dedicated Memory: 252 MB
Shared Memory: 1661 MB
Current Mode: 1920 x 1080 (32 bit) (60Hz)
