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<body><span class="vcard"><a class="email" href="mailto:elizabethx.de.la.torre.mena@intel.com" title="Elizabeth <elizabethx.de.la.torre.mena@intel.com>"> <span class="fn">Elizabeth</span></a>
</span> changed
<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CFL] [IGT] pm_backlight failing if more than 2 pipes connected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102568">bug 102568</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEEDINFO
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<td>REOPENED
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<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CFL] [IGT] pm_backlight failing if more than 2 pipes connected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102568#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [CFL] [IGT] pm_backlight failing if more than 2 pipes connected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102568">bug 102568</a>
from <span class="vcard"><a class="email" href="mailto:elizabethx.de.la.torre.mena@intel.com" title="Elizabeth <elizabethx.de.la.torre.mena@intel.com>"> <span class="fn">Elizabeth</span></a>
</span></b>
<pre>(In reply to Rodrigo Vivi from <a href="show_bug.cgi?id=102568#c2">comment #2</a>)
<span class="quote">> This is a potential fix: <a href="https://patchwork.freedesktop.org/patch/173990/">https://patchwork.freedesktop.org/patch/173990/</a>
>
> Merged on drm-tip after 4.13.0-rc7...
>
> So, could you please test latest drm-tip?</span >
Same status:
With two pipes:
$ : sudo -E ./pm_backlight
IGT-Version: 1.20-g7f93a26 (x86_64) (Linux:
4.14.0-rc3-drm-tip-ww40-commit-247cb84+ x86_64)
Subtest basic-brightness: SUCCESS (0.206s)
Subtest bad-brightness: SUCCESS (0.000s)
Subtest fade: SUCCESS (2.322s)
With three:
$ : sudo -E ./pm_backlight
IGT-Version: 1.19-g08a2f88 (x86_64) (Linux:
4.14.0-rc3-drm-tip-ww40-commit-79f8205+ x86_64)
(pm_backlight:1550) CRITICAL: Test assertion failure function test_and_verify,
file pm_backlight.c:111:
(pm_backlight:1550) CRITICAL: Failed assertion: ({ typeof(0) _a = (0);
typeof(val - tolerance) _b = (val - tolerance); _a > _b ? _a : _b; }) <= result
(pm_backlight:1550) CRITICAL: error: 114000 > 0
Stack trace:
#0 [__igt_fail_assert+0x101]
#1 [test_and_verify+0xff]
#2 [__libc_csu_init+0x0]
Subtest basic-brightness failed.
**** DEBUG ****
(pm_backlight:1550) CRITICAL: Test assertion failure function test_and_verify,
file pm_backlight.c:111:
(pm_backlight:1550) CRITICAL: Failed assertion: ({ typeof(0) _a = (0);
typeof(val - tolerance) _b = (val - tolerance); _a > _b ? _a : _b; }) <= result
(pm_backlight:1550) CRITICAL: error: 114000 > 0
(pm_backlight:1550) igt-core-INFO: Stack trace:
(pm_backlight:1550) igt-core-INFO: #0 [__igt_fail_assert+0x101]
(pm_backlight:1550) igt-core-INFO: #1 [test_and_verify+0xff]
(pm_backlight:1550) igt-core-INFO: #2 [__libc_csu_init+0x0]
**** END ****
Subtest basic-brightness: FAIL (0.001s)
Subtest bad-brightness: SUCCESS (0.000s)
(pm_backlight:1550) CRITICAL: Test assertion failure function test_and_verify,
file pm_backlight.c:111:
(pm_backlight:1550) CRITICAL: Failed assertion: ({ typeof(0) _a = (0);
typeof(val - tolerance) _b = (val - tolerance); _a > _b ? _a : _b; }) <= result
(pm_backlight:1550) CRITICAL: error: 114000 > 0
Stack trace:
#0 [__igt_fail_assert+0x101]
#1 [test_and_verify+0xff]
#2 [__libc_csu_init+0x0]
Subtest fade failed.
**** DEBUG ****
(pm_backlight:1550) CRITICAL: Test assertion failure function test_and_verify,
file pm_backlight.c:111:
(pm_backlight:1550) CRITICAL: Failed assertion: ({ typeof(0) _a = (0);
typeof(val - tolerance) _b = (val - tolerance); _a > _b ? _a : _b; }) <= result
(pm_backlight:1550) CRITICAL: error: 114000 > 0
(pm_backlight:1550) igt-core-INFO: Stack trace:
(pm_backlight:1550) igt-core-INFO: #0 [__igt_fail_assert+0x101]
(pm_backlight:1550) igt-core-INFO: #1 [test_and_verify+0xff]
(pm_backlight:1550) igt-core-INFO: #2 [__libc_csu_init+0x0]
**** END ****
Subtest fade: FAIL (0.000s)</pre>
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