<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [bisected BYT] complete freeze after: drm/i915/vlv: WA for Turbo and RC6 to work together" href="https://bugs.freedesktop.org/show_bug.cgi?id=88012#c108">Comment # 108</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - [bisected BYT] complete freeze after: drm/i915/vlv: WA for Turbo and RC6 to work together" href="https://bugs.freedesktop.org/show_bug.cgi?id=88012">bug 88012</a> from <a class="email" href="mailto:laszlo.fiat@gmail.com" title="Laszlo Fiat <laszlo.fiat@gmail.com>"> Laszlo Fiat</a> <pre>(In reply to John from <a href="show_bug.cgi?id=88012#c99">comment #99</a>) > To cap frequency I read the max (779 for mine) from > > cat /sys/class/drm/card0/gt_max_freq_mhz > > To set pick a lower value (as root) > > echo 423 > /sys/kernel/debug/dri/0/i915_max_freq I have a Z3735F baytrail tablet running Debian 8 with a 1 month old linux-next kernel. I've lowered the i915_max_freq to 345 MHz, and achieved stability that way. No freezes since then. The Z3735F GPU has a base freq of 311 MHz, so I am pretty close to that. I have also patched the kernel source with a few baytrail sdhci related patches from: <a href="https://github.com/hadess/rtl8723bs/tree/master/patches">https://github.com/hadess/rtl8723bs/tree/master/patches</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>