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<p class="MsoNormal">Hi~ all,<o:p></o:p></p>
<p class="MsoNormal">I try to run the test pm_backlight. But there is an skip with the log as following.<o:p></o:p></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333"><o:p> </o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333">````<o:p></o:p></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333">IGT-Version: 1.19-g4258cc8e (x86_64) (Linux: 4.10.0 x86_64) Test<o:p></o:p></span></p>
<p style="mso-margin-top-alt:7.5pt;margin-right:0in;margin-bottom:0in;margin-left:0in;margin-bottom:.0001pt;background:white;font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-style: initial;text-decoration-color: initial;word-spacing:0px">
<span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333">requirement not met in function __real_main154, file pm_backlight.c:163:<o:p></o:p></span></p>
<p style="mso-margin-top-alt:7.5pt;margin-right:0in;margin-bottom:0in;margin-left:0in;margin-bottom:.0001pt;background:white;font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-style: initial;text-decoration-color: initial;word-spacing:0px">
<span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333">Test requirement: !(backlight_read(&old, "brightness")) Last errno: 2,<o:p></o:p></span></p>
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<span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#333333">No such file or directory<o:p></o:p></span></p>
<p class="MsoNormal">````<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">By my check there is not a file in dir /sys/class/backlight/<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I wander is there any kconfig or boot parameters need to set?<o:p></o:p></p>
<p class="MsoNormal">I have tried adding “acpi_ osi=Linux acpi_backlight=vendor” to GRUB config, but it’s same as before.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thank you!<o:p></o:p></p>
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