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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Delay when starting firefox, thunderbird or chromium and dmesg spam"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98502#c19">Comment # 19</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Delay when starting firefox, thunderbird or chromium and dmesg spam"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98502">bug 98502</a>
from <span class="vcard"><a class="email" href="mailto:registo.mailling@gmail.com" title="Mauro Santos <registo.mailling@gmail.com>"> <span class="fn">Mauro Santos</span></a>
</span></b>
<pre>(In reply to Emil Velikov from <a href="show_bug.cgi?id=98502#c18">comment #18</a>)
<span class="quote">> (In reply to Eugene Shalygin from <a href="show_bug.cgi?id=98502#c17">comment #17</a>)
> > To clarify: lspci was never waking up the dGPU. I assume that it was always
> > reading the device config file.
>
> The kernel behaviour change(?) does sound surprising. I suggest checking
> that the device was powered off in both cases - leaning that it might not
> have been.</span >
I do have to say that I see the same behavior, although at the time what made
me notice the change is behavior was a mesa update. The only change for the
following tests was booting with a different kernel.
With 4.4.52 lspci says:
03:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Mars
[Radeon HD 8670A/8670M/8750M] [1002:6600] (rev ff)
With 4.9.11 lspci says:
03:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Mars
[Radeon HD 8670A/8670M/8750M] [1002:6600] (rev 81)
Notice that the revision is different so I would bet the kernel was not
behaving properly before.
Also /sys/kernel/debug/dri/1/radeon_pm_info says the following right after
using lspci:
With kernel 4.4.52:
PX asic powered off
With kernel 4.9.11:
uvd vclk: 0 dclk: 0
power level 0 sclk: 30000 mclk: 15000 vddc: 900 vddci: 0 pcie gen: 2
<span class="quote">> That said, it sounds like the root of your issue is different than the one
> covered here - pardon for dragging you :-\</span ></pre>
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