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bbarcher

Member

From: Poland

Registered: 2014-02-27

Posts: 174

Website

Intel graphics driver options for troubleshooting

Jun 10 22:59:33 arch3 gdm-Xorg-:0[413]: (**) intel(0): Option "AccelMethod" "uxa"
Jun 10 22:59:33 arch3 gdm-Xorg-:0[413]: (--) intel(0): Integrated Graphics Chipset: Intel(R) GM45

I've got some questions re the available options. The main one: which options could I use to try to diagnose such performance regression https://bugs.freedesktop.org/show_bug.cgi?id=77372 and how would I enable them? Please chime in if you also know of options that would completely disable any powersaving options.

This would be my last attempt before I sell the damn thing (i.e. my Thinkpad T500).

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Put up or shut up. 
--Austin Meyer, the lead developer of X-Plane
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das_coach

Member

Registered: 2010-09-01

Posts: 9

Re: Intel graphics driver options for troubleshooting

hi bbarcher,

try to identify the used modules first by running

lsmod

After that, you can list the available options by issuing

modinfo <Modulename>

Those options listed as "parm" (ie: parm:           debug_quirks2:Force certain other quirks. (uint)) tells you the kernel parameters, prefixed by the modules' name:
The upper example is an option of the module "sdhci", so the kernel command line could look like "rw root=LABEL=Root-FS b43.allhwsupport=1 libahci.ignore_sss=1 sdhci.debug_quirks2=<SomeUnsignedIntLike"2"> quiet initrd=boot\initramfs-linux.img"
To append this, you have to edit your bootloaders configuration, but how that works depends on which loader you're using.
Have fun,

coach=)

bbarcher

Member

From: Poland

Registered: 2014-02-27

Posts: 174

Website

Re: Intel graphics driver options for troubleshooting

modinfo is exactly what led me into thinking that thare are many options to try out. Thank you. I'll look into it sometime later.

---

Put up or shut up. 
--Austin Meyer, the lead developer of X-Plane
[ url=http://... ]  Text  [ /url ]