joshuafernandes · March 25, 2025 13:40 · Feb 16, 2023 · Jan 3, 2023 · Jan 2, 2023 · Jan 2, 2023
diff --git a/ubuntu-dell-xps-9520.md b/ubuntu-dell-xps-9520.md
@@ -30,7 +30,7 @@ Useful links:
 CPU_MIN_PERF_ON_AC=0
 CPU_MAX_PERF_ON_AC=100
 CPU_MIN_PERF_ON_BAT=0
-CPU_MAX_PERF_ON_BAT=30
+CPU_MAX_PERF_ON_BAT=40
 CPU_BOOST_ON_AC=1
 CPU_BOOST_ON_BAT=0
 CPU_HWP_DYN_BOOST_ON_AC=1

diff --git a/ubuntu-dell-xps-9520.md b/ubuntu-dell-xps-9520.md
@@ -7,7 +7,7 @@
 4. Use Windows recovery to fix new disk setup
 5. Disable Fast Startup in Windows
 6. Disable secure boot in BIOS (or make sure it's disabled)
-7. Shrink main parittion in Windows
+7. Shrink main partition in Windows
 
 Useful links:
 * https://www.dell.com/support/home/en-us/product-support/product/xps-15-9520-laptop/drivers

diff --git a/ubuntu-dell-xps-9520.md b/ubuntu-dell-xps-9520.md
@@ -23,12 +23,21 @@ Useful links:
 ## Power/Battery optimization (gives me 6-7 hours of working/web)
 1. Chose intel graphics only: `sudo prime-select intel` (it somehow is disabled in the nvidia-smi)
 2. Install `tlp` and `powertop`
-3. Use "Power Safer" mode
-4. In Bios: Tune down Display brightness on Battery from 50% to 30%
-5. ~~In Bios: Switch off Intel Turbo Boost~~
-6. Deactivate and mask the `power-profiles-daemon` service
-7. In `/etc/tlp.conf` set `CPU_BOOST_ON_AC=1` and `CPU_BOOST_ON_BAT=0`
-8. In `/etc/tlp.conf` set `CPU_MAX_PERF_ON_BAT=30`
+3. In Bios: Tune down Display brightness on Battery from 50% to 30%
+4. Deactivate and mask the `power-profiles-daemon` service
+5. In `/etc/tlp.conf` set 
+```
+CPU_MIN_PERF_ON_AC=0
+CPU_MAX_PERF_ON_AC=100
+CPU_MIN_PERF_ON_BAT=0
+CPU_MAX_PERF_ON_BAT=30
+CPU_BOOST_ON_AC=1
+CPU_BOOST_ON_BAT=0
+CPU_HWP_DYN_BOOST_ON_AC=1
+CPU_HWP_DYN_BOOST_ON_BAT=0
+PLATFORM_PROFILE_ON_AC=balanced
+PLATFORM_PROFILE_ON_BAT=low-power
+```
 
 ## UHD+ display
 1. Ubuntu - Settings - Accesibility: Enable Large Text

diff --git a/ubuntu-dell-xps-9520.md b/ubuntu-dell-xps-9520.md
@@ -20,13 +20,15 @@ Useful links:
 3. Install Ubuntu on free space. For encryption you will need a partition for `/boot` (`~1G`) and `/` respectively. 
 4. After installation install "Additional Drivers": Nvidia driver metapackage 515 (proprietary)
 
-## Power/Battery optimization (gives me 7-8 hours of working/web)
+## Power/Battery optimization (gives me 6-7 hours of working/web)
 1. Chose intel graphics only: `sudo prime-select intel` (it somehow is disabled in the nvidia-smi)
 2. Install `tlp` and `powertop`
 3. Use "Power Safer" mode
 4. In Bios: Tune down Display brightness on Battery from 50% to 30%
 5. ~~In Bios: Switch off Intel Turbo Boost~~
-6. In `/etc/tlp.conf` set `CPU_MAX_PERF_ON_BAT=30`
+6. Deactivate and mask the `power-profiles-daemon` service
+7. In `/etc/tlp.conf` set `CPU_BOOST_ON_AC=1` and `CPU_BOOST_ON_BAT=0`
+8. In `/etc/tlp.conf` set `CPU_MAX_PERF_ON_BAT=30`
 
 ## UHD+ display
 1. Ubuntu - Settings - Accesibility: Enable Large Text

diff --git a/ubuntu-dell-xps-9520.md b/ubuntu-dell-xps-9520.md
@@ -25,7 +25,7 @@ Useful links:
 2. Install `tlp` and `powertop`
 3. Use "Power Safer" mode
 4. In Bios: Tune down Display brightness on Battery from 50% to 30%
-5. In Bios: Switch off Intel Turbo Boost
+5. ~~In Bios: Switch off Intel Turbo Boost~~
 6. In `/etc/tlp.conf` set `CPU_MAX_PERF_ON_BAT=30`
 
 ## UHD+ display

diff --git a/ubuntu-dell-xps-9520.md b/ubuntu-dell-xps-9520.md
@@ -10,6 +10,7 @@
 7. Shrink main parittion in Windows
 
 Useful links:
+* https://www.dell.com/support/home/en-us/product-support/product/xps-15-9520-laptop/drivers
 * https://www.dell.com/support/kbdoc/en-us/000131253/how-to-install-ubuntu-and-windows-8-or-10-as-a-dual-boot-on-your-dell-pc
 * https://www.dell.com/support/kbdoc/en-us/000131901/loading-ubuntu-on-systems-using-pcie-m2-drives
 

diff --git a/ubuntu-dell-xps-9520.md b/ubuntu-dell-xps-9520.md
@@ -19,7 +19,7 @@ Useful links:
 3. Install Ubuntu on free space. For encryption you will need a partition for `/boot` (`~1G`) and `/` respectively. 
 4. After installation install "Additional Drivers": Nvidia driver metapackage 515 (proprietary)
 
-## Power optimization (gives me 7-8 hours of Netflix/Web browsing)
+## Power/Battery optimization (gives me 7-8 hours of working/web)
 1. Chose intel graphics only: `sudo prime-select intel` (it somehow is disabled in the nvidia-smi)
 2. Install `tlp` and `powertop`
 3. Use "Power Safer" mode

diff --git a/ubuntu-dell-xps-9520.md b/ubuntu-dell-xps-9520.md
@@ -16,7 +16,7 @@ Useful links:
 ## Installing Ubuntu
 1. Chose Ubuntu 22.10 - audio is already fixed (see [here](https://www.reddit.com/r/linuxquestions/comments/uxktd8/dell_xps_15_9520_sound_is_horrible/))
 2. If Ubuntu live/installer gets [stuck at the beginning](https://www.reddit.com/r/DellXPS/comments/vt1qxa/dual_boot_win11ubuntu_on_xps_15_9520/): start installer with safe graphics option
-3. Install Ubuntu on free space. For encryption want encryption you will need a partition for `/boot` and `/`
+3. Install Ubuntu on free space. For encryption you will need a partition for `/boot` (`~1G`) and `/` respectively. 
 4. After installation install "Additional Drivers": Nvidia driver metapackage 515 (proprietary)
 
 ## Power optimization (gives me 7-8 hours of Netflix/Web browsing)

diff --git a/ubuntu-dell-xps-9520.md b/ubuntu-dell-xps-9520.md
@@ -0,0 +1,32 @@
+# Ubuntu on Dell XPS 9520
+
+## Before installing Ubuntu:
+1. For dual boot, disable Bitlocker in Windows
+2. Update BIOS (and everything else that Dell recommends) via Windows
+3. Switch from RAID to AHCI in Bios
+4. Use Windows recovery to fix new disk setup
+5. Disable Fast Startup in Windows
+6. Disable secure boot in BIOS (or make sure it's disabled)
+7. Shrink main parittion in Windows
+
+Useful links:
+* https://www.dell.com/support/kbdoc/en-us/000131253/how-to-install-ubuntu-and-windows-8-or-10-as-a-dual-boot-on-your-dell-pc
+* https://www.dell.com/support/kbdoc/en-us/000131901/loading-ubuntu-on-systems-using-pcie-m2-drives
+
+## Installing Ubuntu
+1. Chose Ubuntu 22.10 - audio is already fixed (see [here](https://www.reddit.com/r/linuxquestions/comments/uxktd8/dell_xps_15_9520_sound_is_horrible/))
+2. If Ubuntu live/installer gets [stuck at the beginning](https://www.reddit.com/r/DellXPS/comments/vt1qxa/dual_boot_win11ubuntu_on_xps_15_9520/): start installer with safe graphics option
+3. Install Ubuntu on free space. For encryption want encryption you will need a partition for `/boot` and `/`
+4. After installation install "Additional Drivers": Nvidia driver metapackage 515 (proprietary)
+
+## Power optimization (gives me 7-8 hours of Netflix/Web browsing)
+1. Chose intel graphics only: `sudo prime-select intel` (it somehow is disabled in the nvidia-smi)
+2. Install `tlp` and `powertop`
+3. Use "Power Safer" mode
+4. In Bios: Tune down Display brightness on Battery from 50% to 30%
+5. In Bios: Switch off Intel Turbo Boost
+6. In `/etc/tlp.conf` set `CPU_MAX_PERF_ON_BAT=30`
+
+## UHD+ display
+1. Ubuntu - Settings - Accesibility: Enable Large Text
+2. Firefox or any other browser: Adjust default zoom level (e.g. 130%)
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