Ubuntu-Certification

Graphics unstable on thinkpad t450s (Intel HD Graphics 5500)

Asked by seth goldstein

Trying to achieve: Get a more stable graphics environment up and running

Steps to take: basic ubtuntu 14.04 install. Boot up and run for a few minutes and then ...

What happens: After running for a few minutes the graphics gets flacky.

What should happen: Graphics should not get flaky.

I have just installed ubuntu 14.04 on my new thinkpad t450s. Everything basically works, but something is very flaky about my keyboard or display or both. After running for awhile some apps (E.g., thunderbird and sometimes emacs for example) will display garbage. If I refresh by moving the screen around or changing buffers/tabs/etc. they can often recover.

I see that there is an [Intel(R) Graphics Installer for Linux* 1.0.7](https://01.org/linuxgraphics/downloads/2014/intelr-graphics-installer-linux-1.0.7). I am leery about just loading this and running it. Any suggestions about how I should proceed?

    $ sudo lshw -c video
      *-display
           description: VGA compatible controller
           product: Broadwell-U Integrated Graphics
           vendor: Intel Corporation
           physical id: 2
           bus info: pci@0000:00:02.0
           version: 09
           width: 64 bits
           clock: 33MHz
           capabilities: msi pm vga_controller bus_master cap_list rom
           configuration: driver=i915 latency=0
           resources: irq:63 memory:e0000000-e0ffffff memory:d0000000-dfffffff ioport:3000(size=64)
    $ modinfo i915 | head
    filename: /lib/modules/3.16.0-31-generic/kernel/drivers/gpu/drm/i915/i915.ko
    license: GPL and additional rights
    description: Intel Graphics
    author: Tungsten Graphics, Inc.
    srcversion: 9929027A8A6F05972AD6986
    alias: pci:v00008086d000022B3sv*sd*bc03sc*i*
    alias: pci:v00008086d000022B2sv*sd*bc03sc*i*
    alias: pci:v00008086d000022B1sv*sd*bc03sc*i*
    alias: pci:v00008086d000022B0sv*sd*bc03sc*i*
    alias: pci:v00008086d0000162Dsv*sd*bc03sc*i*
    $ uname -a
    Linux mypad 3.16.0-31-generic #43~14.04.1-Ubuntu SMP Tue Mar 10 20:13:38 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

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Po-Hsu Lin (cypressyew) said : 		#1

Hello,

thanks for the bug report, I've changed the affected project from ubuntu-certification to linux.
Let's have this tracked on the bug section.

Regards.

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