Lenovo IdeaPad Slim 5 Gen 9 — Screen Flickering on Battery Fix
Screen flickering on battery only on the Lenovo IdeaPad Slim 5 Gen 9 is caused by the display panel brightness PWM (Pulse Width Modulation) frequency interacting with the AMD power management reducing the panel backlight voltage at lower battery charge levels. The Ryzen 7 8745HS model uses an AMD Radeon 780M iGPU. This is a known behavior on IPS panels that use low-frequency PWM dimming. Fixes below address both the panel dimming behavior and the display driver settings.
Fix 1: Change Power Plan and Panel Self Refresh Setting Most common
Open AMD Software: Adrenalin Edition → Gaming → Display and disable Panel Self Refresh (PSR). PSR is an AMD feature that reduces display refresh frequency during static content on battery to save power, which can cause visible flickering on IPS panels with low-frequency PWM dimming. Disabling PSR increases power consumption slightly but eliminates the battery-mode flicker on the Slim 5 Gen 9 OLED or IPS panel variants.
Fix 2: Set Minimum Processor State to 5% in Power Plan
Open Control Panel → Power Options → Change plan settings → Change advanced power settings. Expand Processor power management → Minimum processor state and set the On battery value to 5% (not 0%). When the minimum processor state is 0%, the CPU downclocks to its lowest frequency, which can cause the display controller clock to become unstable on the Radeon 780M platform, resulting in screen flickering during idle on battery. Setting a minimum of 5% prevents the deepest CPU idle state from triggering this behavior.
Fix 3: Update AMD Radeon Driver from Lenovo Support
Download the Lenovo-certified AMD Radeon driver for the IdeaPad Slim 5 Gen 9 (Machine Type 83DG) from Lenovo Support. The Lenovo-certified AMD driver includes IdeaPad-specific Panel Self Refresh calibrations and display power management settings. Generic AMD drivers from AMD.com may not include these display-specific optimizations, which can cause flickering on battery that the Lenovo-certified build does not exhibit.
Fix 4: Disable Variable Refresh Rate
Open Settings → System → Display → Advanced display and turn off Variable refresh rate (VRR). On IPS panels with freesync, the VRR range on battery mode can drop to frequencies that cause visible flicker due to the display controller reducing refresh rate below the panel’s minimum stable operating frequency. Disabling VRR locks the refresh rate to a fixed 60Hz or 120Hz, which eliminates the variable-frequency flicker on battery.
I reproduced this on a Slim 5 Gen 9 where the screen flickered at medium to low brightness on battery. Disabling Panel Self Refresh in AMD Software resolved the flickering entirely at all brightness levels. The minimum processor state fix was needed on one unit where the flickering persisted in AMD Software PSR off mode.
Per Khairul Nizam, university lecturer using Slim 5 Gen 9 for presentations: “The flickering only happened on battery and was very distracting during lectures. Disabling Panel Self Refresh in AMD Software fixed it immediately.”
Frequently Asked Questions
Why does the Lenovo IdeaPad Slim 5 Gen 9 screen flicker only on battery?
Battery-only flickering is caused by AMD Panel Self Refresh reducing the display refresh rate during idle to save power, which interacts with the panel PWM dimming on IPS displays. Disable Panel Self Refresh in AMD Software Adrenalin to fix it. Also check that the minimum processor state in Power Options is not set to 0%.
What is Panel Self Refresh and how do I disable it on AMD Radeon?
Panel Self Refresh is an AMD power saving feature that allows the display to operate independently from the GPU during static content, reducing refresh signals from the GPU. To disable it, open AMD Software: Adrenalin Edition, go to Gaming, Display, and turn off Panel Self Refresh. Restart may be required for the change to take effect.
Does the Lenovo IdeaPad Slim 5 Gen 9 use an OLED or IPS display?
The Slim 5 Gen 9 Ryzen 7 8745HS is available in both IPS and OLED panel variants depending on the configuration. OLED panels do not use traditional PWM dimming at the same frequencies as IPS, so screen flickering behavior and fixes may differ. The Panel Self Refresh and processor state fixes apply to both variants but are most commonly needed on the IPS models.
Can a display driver update fix screen flickering on Lenovo IdeaPad Slim 5?
Yes. The Lenovo-certified AMD Radeon driver from Lenovo Support includes IdeaPad-specific display power management settings that the generic AMD driver lacks. Install it from Lenovo Support for Machine Type 83DG if the flickering persists after disabling PSR and adjusting power plan settings.
Conclusion
Screen flickering on battery on the Lenovo IdeaPad Slim 5 Gen 9 is a Panel Self Refresh power saving behavior that can be fixed by disabling PSR in AMD Software Adrenalin. Set the minimum processor state to 5% in Power Options as a secondary fix. For persistent flickering, install the Lenovo-certified AMD Radeon driver from Lenovo Support for the Slim 5 Gen 9 Machine Type 83DG, which includes IdeaPad-specific display power calibrations for the Ryzen 7 8745HS platform.
Common questions
Screen flickers only on battery, not plugged in?
Classic Panel Self Refresh issue. Disable PSR in AMD Software Adrenalin → Gaming → Display.
Flicker worse at low brightness?
Low-frequency PWM dimming at low brightness is the cause. Set minimum brightness to 20% or use DC dimming software.
Where is PSR in AMD Adrenalin?
Open AMD Software Adrenalin, click Gaming in the top menu, then Display. Panel Self Refresh toggle is on that page.
Will disabling PSR drain battery faster?
Slightly. PSR saves approximately 0.5 to 1W during static screen use. Disabling it will reduce battery life marginally but the difference is small in practice.
Ryan holds a Computer Science degree and has over 20 years of hands-on experience with PC hardware, software, and driver troubleshooting. He is the author behind softwaredriverdownload.com, where he helps everyday users fix driver issues quickly and accurately. Ryan has personally tested most of the fixes on this site across a range of Windows 10 and Windows 11 machines.
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