Differences

This shows you the differences between two versions of the page.

--- devices:amd_graphics [2020/01/19 10:32] – external edit 127.0.0.1
+++ devices:amd_graphics [2024/08/13 22:01] (current) – removed Sean Rhone
@@ Line 1: / Line 1: @@
-====== Information ======
-  * Diagnostic commands for AMD graphics cards
-====== AMDGPU ======
-===== References =====
-  * https://wiki.archlinux.org/index.php/AMDGPU#Overclocking
-===== TODO =====
-  * https://blog.tingping.se/2018/12/01/amdgpu-fullrgb.html
-===== Query =====
-==== Power Info ====
-****
-  sudo watch --interval '0.5' cat '/sys/kernel/debug/dri/0/amdgpu_pm_info'
-==== Power Sates ====
-****
-  cat '/sys/class/drm/card0/device/pp_od_clk_voltage'
-===== Overclock =====
-==== SCLK ====
-  * ''7'' is the highest available ''PSTATE'' for ''SCLK''
-  * ''1386'' is the value for ''SCLK'' for that ''PSTATE''
-  * ''1155'' is the voltage/''VDDC'' for the specified ''SCLK'' for that ''PSTATE''
-  * When the highest ''PSTATE'' is used, the GPU Core will run at 1386MHz @ 1155mV
-  * :!: This does **not** take effect immediately
-  echo 's 7 1386 1155' | sudo tee '/sys/class/drm/card0/device/pp_od_clk_voltage'
-==== MCLK ====
-  * ''2'' is the highest available ''PSTATE'' for ''MCLK''
-  * ''2025'' is the value for ''MCLK'' for that ''PSTATE''
-  * ''955'' is the voltage/''VDDC'' for the specified ''MCLK'' for that ''PSTATE''
-  * When the highest ''PSTATE'' is used, the GPU Memory will run at 2025MHz @ 955mV
-  * :!: This does **not** take effect immediately
-  echo 'm 2 2025 955' | sudo tee '/sys/class/drm/card0/device/pp_od_clk_voltage'
-==== Verify Values ====
-  * :!: Check if the specified values look alright
-  cat '/sys/class/drm/card0/device/pp_od_clk_voltage'
-==== Commit ====
-  * :!: Be absolutely certain the values above looked alright
-  * :!: It is **very** well possible to destroy hardware with this if the values are too high
-  echo 'c' | sudo tee '/sys/class/drm/card0/device/pp_od_clk_voltage'
-==== Verify Clocks ====
-  * Runs ''glxgears'' without VSync, thus allowing the GPU to enter the highest ''PSTATE'' automatically
-  * Queries power info live every 0.5s
-  vblank_mode='0' glxgears
-  sudo watch --interval '0.5' cat '/sys/kernel/debug/dri/0/amdgpu_pm_info'
-==== Reset Clocks ====
-  * Sets all CLKs and VDDCs to card defaults and commits it
-  echo 'r' | sudo tee '/sys/class/drm/card0/device/pp_od_clk_voltage' && echo 'c' | sudo tee '/sys/class/drm/card0/device/pp_od_clk_voltage'
-===== PSTATE Control =====
-==== Manual Controls ====
-  * ''PSTATE'' will be manually controllable
-  * TODO: ''auto'' makes sense as the default for this?
-  echo 'manual' | sudo tee '/sys/class/drm/card0/device/power_dpm_force_performance_level'
-  cat '/sys/class/drm/card0/device/power_dpm_force_performance_level'
-==== SCLK ===
-  * Can allow either a single ''PSTATE'', or multiple to be automatically selected for ''SCLK'' based on GPU load
-  echo '7' | sudo tee '/sys/class/drm/card0/device/pp_dpm_sclk'
-  echo '5 6 7' | sudo tee '/sys/class/drm/card0/device/pp_dpm_sclk'
-==== MCLK ====
-  * Can allow either a single ''PSTATE'', or multiple to be automatically selected for ''MCLK'' based on GPU load
-  echo '2' | sudo tee '/sys/class/drm/card0/device/pp_dpm_mclk'
-  echo '1 2' | sudo tee '/sys/class/drm/card0/device/pp_dpm_mclk'
-===== Power Limit =====
-==== Query ====
-****
-  cat '/sys/class/drm/card0/device/hwmon/hwmon'*'/power1_cap'
-==== Get Max ====
-****
-  cat '/sys/class/drm/card0/device/hwmon/hwmon'*'/power1_cap_max'
-==== Set ====
-  * :!: This makes fun assumptions, but theoretically shouldn't allow the power cap to go above levels stated in the firmware; might not be dangerous
-  echo "$(cat '/sys/class/drm/card0/device/hwmon/hwmon'*'/power1_cap_max')" | sudo tee '/sys/class/drm/card0/device/hwmon/hwmon'*'/power1_cap' > '/dev/null'
-  echo "$(cat '/sys/class/drm/card1/device/hwmon/hwmon'*'/power1_cap_max')" | sudo tee '/sys/class/drm/card1/device/hwmon/hwmon'*'/power1_cap' > '/dev/null'