Xorg ест 100-300 мегабайт памяти, как оптимизировать или что исправить?

inxi -F 
System:    Host: pc-deb Kernel: 3.16.0-4-amd64 x86_64 (64 bit) Desktop: N/A 
           Distro: Debian GNU/Linux 8 
Machine:   Mobo: Acer model: EA50_KV v: V1.04 Bios: Insyde v: V1.04 date: 05/27/2014
CPU:       Quad core AMD A8-7100 Radeon R5 8 Compute Cores 4C+4G (-MCP-) cache: 8192 KB 
           Clock Speeds: 1: 1100 MHz 2: 1600 MHz 3: 1100 MHz 4: 1800 MHz
Graphics:  Card-1: Advanced Micro Devices [AMD/ATI] Kaveri [Radeon R5 Graphics]
           Card-2: Advanced Micro Devices [AMD/ATI] Opal XT [Radeon R7 M265]
           Display Server: X.Org 1.16.4 driver: fglrx
           Resolution: 1366x768@60.02hz, 1920x1080@60.00hz
           GLX Renderer: AMD Radeon R5 Graphics GLX Version: 4.5.13399 - CPC 15.201.1151
Audio:     Card-1 Advanced Micro Devices [AMD] FCH Azalia Controller driver: snd_hda_intel 
           Card-2 Advanced Micro Devices [AMD/ATI] Kaveri HDMI/DP Audio Controller 
           driver: snd_hda_intel 
           Sound: Advanced Linux Sound Architecture v: k3.16.0-4-amd64
Network:   Card-1: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter
           driver: ath9k
           IF: wlan0 state: down mac: 18:cf:5e:60:47:5c
           Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169
           IF: eth0 state: up speed: 100 Mbps duplex: full mac: f8:a9:63:a3:b6:25
Drives:    HDD Total Size: 1000.2GB (69.3% used)
           ID-1: /dev/sda model: ST500LT012 size: 500.1GB
           ID-2: USB /dev/sdb model: Storage_Device size: 500.1GB
Partition: ID-1: / size: 45G used: 13G (30%) fs: ext4 dev: /dev/sda8 
           ID-2: swap-1 size: 3.30GB used: 0.00GB (0%) fs: swap dev: /dev/sda6 
           ID-3: swap-2 size: 0.40GB used: 0.00GB (0%) fs: swap dev: /dev/zram0 
           ID-4: swap-3 size: 0.40GB used: 0.00GB (0%) fs: swap dev: /dev/zram1 
           ID-5: swap-4 size: 0.40GB used: 0.00GB (0%) fs: swap dev: /dev/zram2 
           ID-6: swap-5 size: 0.40GB used: 0.00GB (0%) fs: swap dev: /dev/zram3 
Sensors:   System Temperatures: cpu: 53.1C mobo: N/A 
           Fan Speeds (in rpm): cpu: N/A 
Info:      Processes: 171 Uptime: 57 min Memory: 1318.9/3088.3MB 
           Client: Shell (bash) inxi: 2.1.28