O servidor Ubuntu X tem problemas na exibição e falha repetidamente

Question

Eu tenho o Ubuntu 14.04 LTS instalado no meu laptop. Mas, infelizmente, estou com muitos problemas de exibição e muitas falhas no servidor X.

Por exemplo, na maioria das vezes eu abro uma pasta e vejo algo assim:

Oqueéresolvidominimizandoemaximizandonovamente!

Ouquasedefinitivamenteveralgoassimquandoeuzoomumaimagem!

Algunssoftwarescomoeclipseencontramproblemasdeíconeourolageme,àsvezes,duranteocongelamentodateladecodificação,eomouseeotecladonãofuncionam,elefalhanapáginadeloginnovamente!

Recentemente,comoIDEdoandroid-studio,quasesofroumcrashacadadoisminutos!!!

Estámedeixandolouco!

Aquiestãoalgumasinformaçõessobreohardwareeosdriversusadosatualmente:

inxi-b

System:Host:xxxxKernel:4.4.0-47-genericx86_64(64bit)Desktop:Xfce4.11.8Distro:Ubuntu14.04trustyMachine:System:LENOVOproduct:80NTversion:Lenovoideapad500-15ISKMobo:LENOVOmodel:Lenovoideapad5version:NoDPKBios:LENOVOversion:CFCN21WW(V1.03)date:08/10/2015CPU:DualcoreIntelCorei7-6500UCPU(-HT-MCP-)clockedat499.992MHzGraphics:Card:IntelHDGraphics520X.Org:1.15.1drivers:intel(unloaded:fbdev,vesa)Resolution:[email protected]:Gallium0.4onllvmpipe(LLVM3.4,256bits)GLXVersion:2.1Mesa10.1.3Network:Card-1:IntelDualBandWireless-AC3165PlusBluetoothdriver:iwlwifiCard-2:RealtekRTL8111/8168/8411PCIExpressGigabitEthernetControllerdriver:r8169Drives:HDDTotalSize:1000.2GB(12.0%used)Info:Processes:275Uptime:2:21Memory:2705.9/7842.5MBClient:Shell(bash)inxi:1.9.17

lspci-k|grep-EA3'VGA|3D|Display'

00:02.0VGAcompatiblecontroller:IntelCorporationHDGraphics520(rev07)Subsystem:LenovoDevice3804Kerneldriverinuse:i915_bpo00:14.0USBcontroller:IntelCorporationSunrisePoint-LPUSB3.0xHCIController(rev21)--01:00.0Displaycontroller:AdvancedMicroDevices,Inc.[AMD/ATI]TopazXT[RadeonR7M260/M265/M340/M360/M440/M445](revff)Kerneldriverinuse:amdgpu02:00.0Ethernetcontroller:RealtekSemiconductorCo.,Ltd.RTL8111/8168/8411PCIExpressGigabitEthernetController(rev15)Subsystem:LenovoDevice3833

lsmod|grep"^ video \ s"

video                  40960  2 i915_bpo,ideapad_laptop

grep -E 'Driver DRI' /var/log/Xorg.0.log

[   493.665] (II) intel(0): [DRI2]   DRI driver: i965

grep Driver /etc/X11/xorg.conf *

/etc/X11/xorg.conf.09282016:    Driver "intel"
/etc/X11/xorg.conf.11102016:    Driver "intel"

Vocês têm alguma ideia?

Editar:

Eu também notei as seguintes mensagens de erro na saída do dmesg. Não sei se tem algum uso!

[  493.466681] [drm:amdgpu_resume [amdgpu]] *ERROR* resume 4 failed -2
[  493.466688] [drm:amdgpu_resume_kms [amdgpu]] *ERROR* amdgpu_resume failed (-2).
[  493.466817] [drm:amdgpu_sched_run_job [amdgpu]] *ERROR* Error scheduling IBs (-22)
[  493.466832] [drm:amd_sched_main [amdgpu]] *ERROR* Failed to run job!
[  506.759699] [drm] PCIE GART of 4096M enabled (table at 0x0000000000040000).
[  507.006997] [drm:gfx_v8_0_cp_resume [amdgpu]] *ERROR* amdgpu: cp failed to lock ring (-2).
[  507.007016] [drm] ring test on 0 succeeded in 1 usecs
[  507.007228] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: cp failed to lock ring 1 (-2).
[  507.007247] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: cp failed to lock ring 2 (-2).
[  507.007264] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: cp failed to lock ring 3 (-2).
[  507.007279] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: cp failed to lock ring 4 (-2).
[  507.007293] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: cp failed to lock ring 5 (-2).
[  507.007307] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: cp failed to lock ring 6 (-2).
[  507.007320] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: cp failed to lock ring 7 (-2).
[  507.007330] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: cp failed to lock ring 8 (-2).
[  507.007379] [drm] ring test on 9 succeeded in 7 usecs
[  507.007400] [drm:sdma_v2_4_ring_test_ring [amdgpu]] *ERROR* amdgpu: dma failed to lock ring 10 (-2).
[  507.007412] [drm:amdgpu_resume [amdgpu]] *ERROR* resume 5 failed -2
[  507.007426] [drm:amdgpu_resume_kms [amdgpu]] *ERROR* amdgpu_resume failed (-2).